Misteria Vale

Terms of Use

Version 1.1 · in force from 03.09.2026
Reference translation. This is a translation of a document drawn up in Russian. In case of any discrepancy the Russian version prevails, and it is the Russian wording that is recorded with your consent. The Russian text is at its permanent address.
Archived edition 1.1. The edition in force is at the document's permanent address.

Game: Misteria Vale (domain misteriavale.com)

Seller: Sole proprietor Koziy Andrey Anatolyevich, INN 472600391500, OGRNIP 325774600178529. Tax regime — the simplified taxation system ("Income").

Support: support@misteriavale.com (first response within 3 working days)

Permanent address of the document: https://misteriavale.com/legal/terms/


1. General provisions

1.1. These Terms of Use (hereinafter the "Terms") set out the conditions for using the browser game Misteria Vale (hereinafter the "Game"), available at misteriavale.com, and also — if and when the Seller provides such access — through third-party gaming and distribution platforms. The Terms apply to the use of the Game regardless of the way in which the User obtained access to it.

1.2. The Terms apply together with the following documents placed at permanent addresses on the Game's website: the Public Offer (/legal/offer/), the Payment and Refund Policy (/legal/refund/), the Personal Data Policy (/legal/privacy/), the AI Usage Policy (/legal/ai/). The said documents form an integral part of the conditions for using the Game.

1.3. By beginning to use the Game (including by registering an Account), the User confirms that they have read the Terms and accept them. On the purchase of a Package, acceptance of the Terms is additionally confirmed by a mandatory tick in the purchase form, by which the Public Offer and the Terms of Use are accepted simultaneously and familiarity with and agreement to the Payment and Refund Policy is confirmed; for each of these documents a separate acceptance record is made: the version of the document, the date and time, the IP address, the browser data (user agent), the source of acceptance and the order number. Familiarity with the Personal Data Policy is confirmed by the line under the payment button ("By paying you confirm that you have read the Personal Data Policy"); the version of that Policy is likewise recorded in the order.

1.4. The versions of all applicable documents are recorded in the order at the moment of acceptance. A new edition of the Terms does not change the conditions recorded in orders placed earlier.

1.5. Each edition of the Terms has a version number and an effective date. The archive of previous editions is published on the Game's website together with the first edition in force.

2. Terms and definitions

2.1. Game — the browser detective game Misteria Vale, including its program code, interface, plots, characters, images, texts, music and other elements.

2.1.1. Platform — a third-party gaming, distribution or payment venue through which the Seller provides access to the Game. Where the Game is launched through a Platform, the User's relations with the Platform itself (registration on it, payment, refunds, its rules) are governed by the Platform's documents; these Terms govern the use of the Game itself.

2.2. Seller — sole proprietor Koziy Andrey Anatolyevich (details in the header of the Terms), the rightholder and operator of the Game.

2.3. User — a natural person using the Game.

2.4. Account — the User's account in the Game, to which game progress and the Mana balance are linked.

2.5. Mana — an in-game resource in units of which the scope of the right to use the additional functionality of the Game is expressed. The full list of the legal properties of Mana (set out in detail in the Public Offer): Mana is not money or electronic currency; it is not accepted by third parties; it has no independent value outside the Game; it is not withdrawn and is not converted into property; it is not transferred between Accounts; it does not yield income; it is used only for the functions of the Game; the price of Packages and the cost of individual in-game actions may change; free and paid Mana are accounted for separately; on a refund the corresponding Mana is cancelled; on a chargeback Mana is blocked or written off.

2.6. Package — a fixed quantity of units of Mana purchased on the terms of the Public Offer. The current list of Packages and prices is placed in the catalogue of Packages on the Game's website; the terms of a particular order are fixed at the moment of purchase.

2.7. AI agent — a software component of the Game that generates the answers of the game characters using the artificial-intelligence models of an external provider; the current model provider and the terms of data transfer are stated in the AI Usage Policy (/legal/ai/).

2.8. Order number — a human-readable identifier of an order that is stated in the payment reference and in the fiscal receipt and is used when contacting support.

3. Access to the Game

3.1. The Game is provided through a web browser; no separate application need be installed. Access requires an Account and an internet connection.

3.2. Basic access to the Game is free and includes a starting stock of Mana. The additional functionality of the Game is used by spending Mana.

3.2.1. The procedure for purchasing Packages on the Website is determined by the Public Offer (https://misteriavale.com/legal/offer/). Where Mana is acquired through a Platform, the settlement, the cash receipt and the refund of money are carried out under the Platform's rules, while the right to use the additional functionality is granted by the Seller on the terms of these Terms. The scope and properties of the right granted — units of Mana, its term, the manner of its expenditure, its withdrawal upon a refund of payment and the consequences of a negative balance — are determined by section 6 of the Public Offer, which applies to the use of Mana regardless of the channel in which it was acquired.

3.3. The Seller endeavours to keep the Game available but does not guarantee its uninterrupted and error-free operation. The service is provided with technical interruptions for maintenance and updating, both planned and emergency.

3.4. The Game is not gambling, a lottery or a bet; use of the Game does not involve any possibility of winning and is not based on risk.

4. Licence

4.1. The Seller grants the User a simple (non-exclusive) licence to use the Game for its direct functional purpose.

4.2. The licence is in effect for the period during which the User uses the Game's service and terminates on deletion of the Account or on discontinuation of the service (section 20).

4.3. The licence is not transferable and may not be sub-licensed. The User may not copy, modify or decompile the Game, extract its elements or create derivative products on its basis, except in the cases expressly permitted by law.

4.4. The licence is granted without limitation of the territory of use; the sale of Packages is made in roubles and is not addressed to users located outside the Russian Federation, as determined by the Public Offer.

5. Account

5.1. To create an Account the User completes registration. The User undertakes to state accurate data and to keep it up to date.

5.2. The User is responsible for maintaining the confidentiality of the means of access to the Account. Actions performed through the Account are treated as the User's actions unless the circumstances indicate otherwise; in a dispute the Seller takes into account the available technical data (logs, IP addresses, devices).

5.3. The Seller does not collect or store bank card details: payment is made on the page or payment link of the acquiring bank.

5.4. One User — one Account, unless expressly permitted otherwise by the Seller. Creating additional Accounts in order to obtain the starting stock of Mana repeatedly is prohibited (see also section 8).

6. Prohibition on transferring the Account

6.1. The Account is inalienable: it may not be sold, given away, exchanged, lent for temporary use or otherwise transferred to third parties, whether for consideration or gratuitously.

6.2. Mana is tied to the Account and is not transferred between Accounts (a property of Mana under the Public Offer).

6.3. A breach of the prohibitions in this section is a ground for blocking the Account (section 16).

7. Permitted conduct

7.1. In using the Game the User undertakes:

  1. to comply with the legislation of the Russian Federation and with these Terms;
  2. not to interfere with the operation of the Game, its servers and network infrastructure;
  3. not to exploit vulnerabilities, errors or undocumented features of the Game, and, on discovering them, to report them to support;
  4. not to use automated means (bots, scripts, parsers) to interact with the Game without the Seller's written permission;
  5. not to impersonate the Seller, its representatives or other Users;
  6. not to take actions aimed at obtaining unlawful access to other persons' Accounts.

8. Prohibition on circumventing charging

8.1. The answers of the game characters are generated by AI agents, and every line is charged in units of Mana at the in-game rates in force. The cost of individual in-game actions may change (see section 14).

8.2. Any actions aimed at circumventing the accounting for Mana expenditure are prohibited, including:

  1. modification of the client side of the Game or of network traffic in order to obtain characters' answers without Mana being charged;
  2. direct requests to the Game's programming interfaces bypassing its standard interface;
  3. exploitation of errors in the crediting or charging of Mana, including deliberately creating conditions for repeated crediting;
  4. repeated registration of Accounts in order to obtain the starting stock of Mana;
  5. any other means of obtaining the additional functionality of the Game without the corresponding expenditure of Mana.

8.3. The actions in clause 8.2 are a material breach of the Terms and a ground for blocking the Account, and also for cancelling the Mana obtained as a result of the breach.

9. Rights to content

9.1. The Game and all its elements — program code, design, interface, the plots of the cases, characters, texts, images, music, trade marks and the name Misteria Vale — are the intellectual property of the Seller or are used by it on lawful grounds.

9.2. The lines of the game characters and other texts generated by AI agents as part of the Game form part of the Game's content; the rights to them belong to the Seller to the extent permitted by law. The User is entitled to use the generated content within the Game for personal non-commercial purposes (clause 9.4).

9.3. The purchase of Packages and the use of the Game do not transfer to the User any exclusive rights to the Game or its elements.

9.4. Use of the Game's elements outside it (copying, distribution, adaptation) without the Seller's written permission is prohibited, except in the cases expressly permitted by law (including quotation and the personal non-commercial use of screenshots and recordings of gameplay with attribution to the Game).

10. User content

10.1. User content is the texts the User enters in the Game, primarily the lines addressed to the game characters.

10.2. The User retains the rights to their user content.

10.3. By entering user content in the Game, the User grants the Seller a non-exclusive, royalty-free licence to use it for the purposes of operating the Game: processing the request, generating the character's answer, keeping the dialogue and the game progress, moderation, and handling support enquiries and disputes.

10.4. The licence in clause 10.3 is limited to the said purposes; the Seller does not publish user content outside the Game and does not transfer it to third parties otherwise than for the operation of the Game (see the AI Usage Policy and the Personal Data Policy).

10.5. The User is responsible for the content of their user content and undertakes not to enter in the Game information that infringes the rights of third parties or the requirements of the law, and not to state in their lines their own or another person's personal data — the Game does not need it in order to work.

11. How the AI works

11.1. The answers of the game characters are generated by artificial-intelligence models automatically, without prior human review.

11.2. All the characters' answers are works of fiction within the Game's plot. The characters, events and statements are invented; any coincidence with real persons and events is accidental.

11.3. The characters' answers are not statements of fact, professional advice (medical, legal, financial or other) or recommendations for action in real life and must not be used as such.

12. Possible AI errors

12.1. Generative AI technologies are imperfect: characters' answers may contain inaccuracies, contradictions or repetitions, or may not match the User's expectations.

12.2. Answers are produced by a generative model and are variable: the style and substance of an individual line (including how "interesting" it is) may differ even where the Game's functionality has been provided properly.

12.3. In the event of technical defects — for example, where Mana has been charged but the character's answer was not provided because of a failure — the measures provided for by the Payment and Refund Policy apply: repeat provision of the functionality, restoration of Mana, or a refund of the corresponding part of the money paid.

13. Prohibited scenarios of use

13.1. When interacting with AI agents the User is prohibited from:

  1. attempting to obtain from the characters content prohibited by the legislation of the Russian Federation;
  2. using the Game to generate materials that infringe the rights of third parties, or for harassment, threats or discrimination;
  3. deliberately circumventing the built-in restrictions and filters of the models (including by "prompt hacking" techniques);
  4. attempting to extract system instructions, service prompts and other technological materials of the Game;
  5. using the Game to develop competing models and datasets, including the mass collection of generated answers.

13.2. A breach of this section is a ground for moderation measures and blocking (sections 15–16).

14. Restrictions of the model providers

14.1. To generate the characters' answers the Game uses the artificial-intelligence models of an external provider; the current model provider and the terms of data transfer are stated in the AI Usage Policy (/legal/ai/).

14.2. The User undertakes not to use the Game in ways that breach the applicable rules of the current model provider; the list of such rules and links to them are given in the AI Usage Policy (/legal/ai/). The prohibitions in section 13 include, among other things, the requirements of those rules.

14.3. The Seller is entitled to replace the models used and to change their settings, with the Game's functionality preserved; the availability of any particular model is not guaranteed.

14.4. The actual cost of in-game actions in units of Mana may change, including upon replacement of a model or a change in the provider's rates: Mana is spent at the in-game rates in force at the moment the action is performed (the Public Offer, section 8). Changes operate for the future, do not recalculate charges already made and do not apply to actions already begun or paid for; Users are notified of changes in advance in the Game and on the website. A User who does not agree with a change is entitled to obtain a refund of the value of unused paid Mana under the Payment and Refund Policy.

15. Moderation

15.1. The Seller is entitled to review user content and the logs of game events for the purposes of monitoring compliance with the Terms, investigating incidents, supporting Users and complying with the requirements of the law.

15.2. Following moderation the Seller is entitled to: send the User a warning; restrict individual functions; block the Account (section 16). Measures are applied proportionately to the breach.

15.3. The models' automatic filters may reject an individual line; this is part of the normal operation of the Game and not a measure of liability against the User.

16. Blocking

16.1. Grounds for blocking an Account: a material or repeated breach of the Terms (including sections 6, 8, 13); a combination of well-founded indications of fraud; a requirement of the law or of an authorised body.

16.2. The User is notified of the blocking and its reason in the Game's interface and/or by email where an address is available, save where notification is prohibited by law. The User is entitled to send objections to support; the enquiry is considered within the support response time (first response within 3 working days).

16.3. While the block is in force, access to the Game and the spending of Mana are suspended; when the block is lifted the Mana balance is retained. Blocking does not mean the cancellation of all paid Mana: where a breach is confirmed, the Mana obtained as a result of the breach is cancelled; the Seller's losses are compensated by agreement of the Parties or through the courts. An unused balance paid for in good faith is retained until the dispute is resolved and is refunded in money on the User's application under the Payment and Refund Policy; nothing is deducted from the sum refunded other than the value of the Mana actually used and of the Mana obtained as a result of the breach.

17. Deletion of the Account

17.1. The User is entitled at any time to delete their Account by sending a request to support from the Account's email address or by using the deletion function in the Game (where available).

17.2. Deletion of the Account terminates the licence (section 4) and access to the game progress.

17.3. Records of orders, payments and Mana movements, and also the records of acceptance of the documents, are retained after deletion of the Account for the periods established by legislation (tax and accounting records, defence in disputes). For detail, see the Personal Data Policy.

17.4. Deletion of the Account at the User's initiative is a withdrawal by the User from the contract as regards the unused balance: the value of unused paid Mana is refunded in money on the User's application under the Payment and Refund Policy. Before deletion is confirmed, the User is warned about the balance and may spend it or request a refund. On deletion of the Account the Mana balance is cancelled; the right to claim a refund of the value of unused paid Mana is retained, and an application for a refund may be made after deletion of the Account as well — through support, quoting the order number (records of orders, payments and Mana movements are retained, clause 17.3). Refunds do not extend to free Mana.

18. Consequences for Mana: refunds, chargebacks, a technically negative balance

18.1. Mana is credited to the Account only after the bank confirms the payment. Crediting is idempotent: repeated delivery of a bank notification or repeated payment of the same order do not lead to repeated crediting.

18.2. Free Mana (including starting and bonus Mana) is provided gratuitously, is accounted for separately from paid Mana and is spent first. Free Mana is not compensated in money and may be cancelled in the cases provided for by the Game's documents (including in the event of breaches, deletion of the Account, or discontinuation of the Game); refunds of money do not concern free Mana. The terms on which free Mana is credited are published in advance and are not altered retrospectively in respect of Mana already credited.

18.3. On a full refund of money for a purchase, all the Mana of the corresponding Package is cancelled and the access to the Game's paid functionality bought by that purchase is withdrawn.

18.4. On a partial refund, Mana is cancelled in proportion to the share of the sum refunded, with the quantity cancelled rounded down — any doubt is resolved in the User's favour; the access purchased is retained on a partial refund. The method of calculation with an example is set out in the Payment and Refund Policy.

18.5. On receipt of notice of a chargeback (a dispute over a payment under the rules of the payment systems), the Mana credited under the disputed payment is blocked for the duration of the dispute. Mana is cancelled only upon the outcome of the dispute, if the money has in fact been returned to the payer; in that case, where the balance is insufficient, a technically negative balance arises, and the access purchased is withdrawn. If the chargeback is rejected, the block is lifted and the Mana is restored. The Seller keeps evidence of acceptance, crediting, the receipt and expenditure.

18.6. If the Mana to be cancelled or written off has already been spent, the Mana balance may become negative (a technically negative balance). This is an accounting figure and not a debt in monetary form; where the balance is negative, the Game's paid functions are unavailable until it is cleared by crediting.

18.7. Money is refunded to the original payment instrument by which payment was made; if a refund to the original payment instrument is impossible (it is closed or unavailable), the refund is made by another lawful method as agreed with the User. The full refund conditions are in the Payment and Refund Policy.

18.8. The term of validity of paid Mana is not limited: Mana credited is available for as long as the Account exists and the Game's service is provided — until it is spent or cancelled on the grounds provided for by the Game's documents.

19. Age restrictions

19.1. The Game is intended for adult Users (information product mark — 18+). By using the Game the User confirms that they have reached the age of 18. The Game is not intended for children and is not directed at them.

19.2. The Game's plots are "dark detective" stories: they may contain descriptions of crimes and other material not intended for minors.

19.3. Purchases in the Game are made by persons who have reached the age of 18 and have full legal capacity; the means of payment used must belong to the User or be used with the consent of its owner. By accepting the Public Offer, the User gives the assurances as to circumstances provided for by its clause 1.4 (Article 431.2 of the Civil Code of the Russian Federation), including the assurance as to ownership of the means of payment used.

20. Discontinuation of the service

20.1. Should a decision be taken to discontinue the provision of the Game (in whole or in a material part), the procedure set out in this section applies.

20.2. Users are notified of a full discontinuation of the service at least 30 calendar days in advance: the notice is published on the website and in the Game's interface; in addition, a notice is sent to the email address given by the User at purchase or in the settings, where there is one. The sale of Packages ceases from the moment the notice is published; during the notice period Mana may be spent freely. The value of unused paid Mana is refunded in money on the User's application under the Payment and Refund Policy; refunds do not extend to free Mana.

21. Liability

21.1. The Parties bear liability in accordance with the legislation of the Russian Federation. Nothing in the Terms limits the User's rights as a consumer established by law.

21.2. The properties of the service are described in the Terms and the related documents: the service is provided with technical interruptions for maintenance (both planned and emergency), and continuous (one hundred per cent) availability of the Game is not guaranteed (clause 3.3); the characters' answers are produced by a generative model, are variable and are works of fiction with possible inaccuracies (sections 11–12). The Game is provided exclusively for personal non-commercial use.

21.3. The Seller is released from liability for non-performance or improper performance of obligations caused by circumstances of force majeure (clause 3 of Article 401 of the Civil Code of the Russian Federation), and also in cases where the non-performance was caused by the acts or omissions of the User themselves. The voluntary forms of compensation provided for by the Game's documents (repeat provision of the functionality, restoration of Mana, a refund of the corresponding part of the sum paid) supplement and do not replace the User's rights established by law.

21.4. The User shall compensate the Seller for documented losses caused by a breach of the Terms, in the manner established by law.

22. Amendment of the Terms

22.1. The Seller is entitled to issue new editions of the Terms. A new edition is published at the document's permanent address with a new version number and effective date and applies from that date.

22.2. The version of the Terms in force at the moment of acceptance is recorded in the order; the conditions of purchases already made are not changed retrospectively. Alteration of the text without assigning a new version is not permitted.

22.3. A new edition is published at least 10 calendar days before its effective date; the User is notified of the forthcoming change in the Game's interface. Changes do not worsen the User's position in respect of Mana already paid for and purchases already made. A User who does not agree with a new edition is entitled to stop using the Game and to delete their Account (section 17) with a refund of the value of unused paid Mana (clause 17.4). For material changes, the User's express confirmation is requested at their next sign-in to the Game.

23. Final provisions

23.1. The law of the Russian Federation applies to the Terms. The choice of applicable law does not deprive the User of the protection afforded by mandatory rules of law that apply irrespective of the agreement of the parties.

23.2. Enquiries, complaints and questions are sent to support: support@misteriavale.com; first response within 3 working days. When enquiring about purchases, the order number must be stated. The complaints procedure for purchases is determined by the Public Offer.

23.3. The invalidity of an individual provision of the Terms does not entail the invalidity of the remaining provisions.

23.4. The Terms are drawn up in Russian. Where a translation into another language appears, the Russian version prevails.