A copy of the terms published at https://lyniumgame.com/terms, the page clause 15 calls "this page". Version announced on 5 October 2026 and revised on 6 October 2026; in force from 20 October 2026. The Spanish text governs (clause 16).

These terms are the contract between you and the person who operates Lynium. They govern the game you install from Steam, the site lyniumgame.com, the chat, the rankings, the tournaments and everything you upload or write through them. By creating an account or using the service you accept them. If you disagree with anything below, do not use the service.

The Privacy Notice, the Community Guidelines, the Beatmap and Rights Policy and the Copyright Policy are part of these terms. Where one of those documents says something different about its own subject, that document prevails.


Lynium is developed and operated by Carlos Arturo Rodríguez Silva, a natural person domiciled in Playas de Rosarito, Baja California, Mexico, under the Lynium® brand. In these terms "Lynium", "we" and "our" refer to that person.

For legal and copyright matters write to legal@lyniumgame.com. For support, accounts and personal data, to support@lyniumgame.com. The Transparency page says who is behind the service and what it runs on.

• Service: the Lynium game distributed through Steam (the "client"), including its beatmap editor; the site lyniumgame.com; the API that connects them; the chat; and the data and files they exchange.
  
  
• Account: the Lynium account you play online with, created from the client with an email address or with Steam, or from the site with Steam.
  
  
• User content: everything you upload or write: beatmap sets and their files (audio, image, video, .lym charts, hitsounds), chat messages and images, room names, your username, your bio and links, comments, and the replays of your plays.
  
  
• Beatmap: a song with one or more playable charts. Set: the charts of one song, together. Ranked: the state of a chart that was reviewed and counts towards the rankings.
  
  
• Lynium Supporter: time, by the month, bought inside the client through Steam, that never renews by itself and gives recognition, personalisation and comfort, never an advantage in play (clause 10).
  
  
• Steam: the Valve Corporation platform the client is distributed through. Discord: the "Lynium Official" community server on Discord Inc.

To create an account and use the service you must be at least 13 years old. If you are between 13 and 17 you need the permission of a parent or legal guardian, who accepts these terms on your behalf; by using the service you represent that you have it. You also need it to buy Lynium Supporter, and by buying you represent that you have it.

We do not admit accounts of children under 13 and do not knowingly collect their data. If we learn that an account belongs to a child under 13, we close it and delete its data as the Privacy Notice describes. A parent or guardian can ask us to by writing to support@lyniumgame.com.

When tournaments with an entry fee or cash prizes exist, taking part in them will require being 18 or older (clause 9).

• One person, one account. Do not share, sell, give away or lend your account.
  
  
• You are responsible for what is done with your account. Protect your password and tell us if you think somebody else got in.
  
  
• If you create the account with Steam, your Steam identifier is linked to it and we use your Steam name and avatar as the Privacy Notice explains. You can pick an icon instead of the avatar and hide the link to your Steam profile from the site's settings.
  
  
• Your username is shown publicly: in the rankings, in the chat, on the site and on our Discord. Do not use a name that impersonates somebody else, infringes anyone's rights or breaks the Community Guidelines. We may change a name that does.
  
  
• We may ask you to confirm that you control the account before acting on a request about it.
  
  
• You can close your account whenever you want. Clause 13 says how and what happens to what you uploaded.

We grant you a personal, non exclusive, non transferable and revocable licence to install and use the client on your devices, for your personal and non commercial use, for as long as you comply with these terms. This clause is the client's end user licence; the text Steam shows you at install time is this same document.

With the client you may not:

• use cheats, bots, macros, modifications or any other means that alter plays, scores, replays or the communication with our servers;
  
  
• modify, decompile or create derivative works of the client, beyond what the law expressly allows you; or redistribute it through any channel other than Steam;
  
  
• extract third party content from the client (music, art, fonts) to use it outside of it, beyond what its own licence allows you (the paragraph on third party components and resources, below);
  
  
• use the Lynium brand, logo or name without our written permission.

The copy you install from Steam is additionally governed by the Steam Subscriber Agreement. Where that agreement and this clause say different things about your purchase or your Steam account, Steam prevails. Updates are applied by Steam; to play online we may require a minimum version.

Third party components and resources. The client includes third party components and resources that are distributed under their own licences: software, adapted code, images, sounds, fonts, shaders, skins and other resources. They are listed, with their authors, their origin and their licence, in the THIRD-PARTY-NOTICES.txt file in the Licenses folder that comes with the game, and the full text of each licence is in the Licenses/Texts folder. Nothing in these terms limits the rights those licences give you over those components and resources: this clause's restrictions on extracting, modifying, decompiling or redistributing do not apply to what one of those licences allows you to do with them, and there the licence governs. This paragraph gives you no rights those licences do not give, nor any over the rest of the client. In particular, you may modify the libraries distributed under the GNU LGPL (such as libusb) and replace them with modified versions, and reverse engineer the client to the extent necessary to debug those modifications.


It stays yours. Uploading content to Lynium takes no right over it away from you.

What you represent when you upload. Every time you publish a beatmap, an image, a message or any other content, you represent and warrant that you hold the rights necessary over each of its elements (the recording, the composition, the image, the video, the chart) or the permission of their owner; that publishing it on Lynium infringes nobody's rights; and that the metadata you enter (artist, title, source, mapper) is accurate. The Beatmap and Rights Policy details what you may upload and carries the text of that declaration.

The licence you grant us. So that we can operate the service, you grant us, over your user content, a non exclusive, worldwide, royalty free licence to host it, store it, reproduce it, transcode it, generate previews and thumbnails, distribute it within the service (the downloads from the game and the playback on the site), display it publicly and announce it on the site, in the game and on our Discord with your username. We may sublicense these uses only to the providers that run our infrastructure. We will not use your content for commercial purposes other than operating and promoting the service without asking you.

How long it lasts. The licence lasts for as long as the content is on the service. If you delete it or close your account, it ends, with two exceptions:

• Sets that reached the Ranked state are kept, with your username replaced by "Deleted account", because other players' scores and rankings depend on them. If you own the rights to the recording or the chart and want it taken down, write to legal@lyniumgame.com and we remove it under the Copyright Policy.
  
  
• Messages in channels mirrored to Discord remain copied on Discord, where we cannot delete them (clause 8).

Credit. We credit you as the creator of what you upload. If somebody else made the chart, say so in the Mapper field: authorship credit is not something this licence trades.

Content published by Lynium. Some sets in the catalogue were imported by Lynium from other rhythm games, with credit to the original mapper and to the source. If you are the mapper or the owner of the recording of one of those sets and want the credit corrected or the set removed, write to legal@lyniumgame.com: we treat it as a notice without asking you for formalities.

What we may do. We may remove, unpublish, decline to rank or unrank content that breaks these terms or the documents that are part of them, with or without prior notice. The review we do before ranking a chart is about quality and playability; it does not verify rights, and approving it does not mean you hold them. We do not pre-screen the rest of user content and we are not responsible for it.


The Community Guidelines are part of these terms and say in detail what is allowed in the chat, the rooms, the profiles and the beatmaps, what moderators can do and how to appeal. In short, you may not:

• harass, threaten, humiliate or discriminate against anyone; or post hateful content;
  
  
• post sexually explicit content, and never sexual content involving minors;
  
  
• impersonate another person, Lynium or its moderators;
  
  
• spam, post unsolicited advertising or misleading links;
  
  
• post other people's personal data without their consent;
  
  
• upload illegal content or content that infringes third party rights;
  
  
• cheat, exploit bugs, access accounts or systems without authorisation, scrape data in bulk or interfere with the operation of the service.

The public chat channels are also published on Discord. What you write in the General channel and in the language channels is copied in real time to our Discord server, with your username and your avatar, and what is written on Discord appears in the game. Those channels are public: anyone can read them, inside and outside Lynium. We do not control the copies on Discord, so deleting a message in Lynium does not delete it there. Do not write in a public channel anything you would not want to be public. Images you upload to those channels are hosted on Discord.

Rooms and direct messages are not copied to Discord. They are kept on our servers for 30 days and then deleted. Any account can send you a direct message; you can mute channels and report whoever bothers you. Moderators may read a room or a direct message only to handle a report.

Presence. While you are connected, other players see that you are online, which beatmap you are playing, your rank and your country.

Spectating. If you watch somebody play, that player and the other spectators see your username, role, avatar and country, and that room's chat is kept for 48 hours. If you are being watched, your play is streamed in real time to whoever is watching.

Steam and Discord. Steam shows your friends the song you are playing and, if you are watching somebody, their username. If you enable Discord Rich Presence in the game's settings, your Discord profile shows the same.

Moderation. Moderators may delete messages, mute you for a time or remove you from the chat under the Community Guidelines.

• Every tournament has its own rules (dates, charts, format, prizes, grounds for disqualification), published on its page. For that tournament, those rules are part of these terms.
  
  
• Results are computed from the scores recorded on the service during the tournament and are frozen when it closes. A disqualification can be appealed to support@lyniumgame.com within the following 7 days.
  
  
• Prizes, where there are any, are handed to each winner manually. We may ask for identification before paying and apply the tax withholdings required by the law of the place the payment is made from.
  
  
• We do not offer tournaments with an entry fee today. When we do, they will be for adults 18 and over only and will carry their own conditions, refunds included, published before registration opens.

Lynium is free. You can play the whole game without paying. The only thing we sell is Lynium Supporter, on sale from the date we announce on the site and in the game. We do not sell subscriptions, virtual currency, songs or beatmaps, or boxes with random rewards.

What we plan. Later on we plan to offer Lynium's own Home World decoration and other account features, such as name changes, more beatmaps in review at once or access to beta versions, within Lynium Supporter or separately. They are plans: they do not exist and are not sold today, and they may change or never come. Before any of them is sold separately, this clause will say what is sold, how it is bought and on what conditions, and the change will be announced as clause 15 says. They will never give an advantage in play.

What it is. Lynium Supporter is time: a number of months (today 1, 3, 6 or 12) during which your account has the Supporter perks. You pay once and it never renews by itself: it is not a subscription and there are no recurring charges. If you buy while you still have time left, the new time is added after the end of the time you had. When the time runs out the perks end and, if the purchase gave you the Supporter role, your account returns to the Player role. If you hold a Lynium staff role (moderator, for example), you keep it, and your name keeps showing that role instead of the gold name, the SUPPORTER tag and the hearts, although the /supporter list shows you like any other Supporter.

How it is bought. Only inside the game, through Steam, with an account linked to Steam. Steam shows you the order and its price before you confirm it, and by confirming it you accept the version of these terms in force at that moment. If that price is in a currency other than your Steam Wallet's, Steam converts it to your currency at its exchange rate of the day and charges you the result. Steam charges your Steam Wallet or the payment method on your account, and that payment is also governed by Steam's terms. The time is added when Steam confirms the charge, even if the game closes after you confirm. A purchase Steam does not authorise is not charged and gives no time. We may limit how many purchases can be made in a period to prevent abuse. The Privacy Notice says what we keep about each purchase.

What it gives. The perks are the ones the game's Lynium Supporter window and https://lyniumgame.com/supporter describe when you buy. They are always recognition, personalisation or comfort. When it goes on sale they are your name in gold, a profile border and the SUPPORTER tag in chat, with hearts that grow with the time you build up. The ones marked "Soon" there do not exist yet: they are plans, which may change or never come, and they are not part of what you buy until they exist. Perks may change; a change does not take away the time you bought, and they will always be of those three kinds.

What it never gives. Lynium Supporter never gives an advantage in play: it does not change scores, pp, rankings, note judgement or difficulty. Nor does it give songs or beatmaps, which are free for everyone, or Lynium Points or merit items, which are only earned.

It is personal. The time stays on the account that bought it. It cannot be moved to another account, resold or exchanged for money or for Lynium Points.

Refunds. Steam refunds a purchase made inside a game not made by Valve only if its developer offers it, and tells you so when you buy. If you want a refund, write to support@lyniumgame.com: we handle every request under the rights consumer law gives you and you cannot waive and, where a refund is due, we return the payment. When Steam tells us it refunded a purchase or that there was a chargeback, we remove the time of that purchase that was still unused, and its days stop counting towards your hearts. If Steam charged you and the time did not appear, write to the same address.

If your account is suspended or closed. If we suspend your account for breaking these terms, the time keeps running during the suspension and is not given back. If we close it for that reason, or you close it, the time left is lost without a refund, unless the law provides otherwise. In any other suspension or closure, the time left is dealt with as the law provides.

If Lynium Supporter or the service ends. We will announce it on the site and in the game with reasonable notice where possible, and stop selling it from that announcement. The time left is dealt with as the law provides.

The public list. The /supporter page shows current Supporters with their username, their avatar or icon, a link to their profile and their hearts, without what each one paid or the dates of their purchases. You appear on the list by default; to hide yourself, turn off SHOW ME ON THE SUPPORTERS LIST in the OTHERS section of the game's settings. Even if you hide, your hearts and the SUPPORTER tag are shown publicly next to your name: in the chat, in the rankings and on your profile.

Donations. The site also links to our Ko-fi page, https://ko-fi.com/lynium, for anyone who wants to donate. A donation is voluntary, buys nothing and entitles you to nothing, Lynium Supporter time included, and is governed by Ko-fi's terms.

Lynium Points. They are earned by playing, have no monetary value and cannot be bought, sold or transferred. We may adjust how they are earned and what they are spent on.


The service relies on third parties: Steam to distribute the client, identify your account, handle achievements and presence, and charge for Lynium Supporter purchases; Discord for the community and the chat mirror; Ko-fi for voluntary donations; and the hosting and network providers the Transparency page describes. Lynium Supporter purchases are charged by Steam, and we never see your card or bank details. A Ko-fi donation is processed by Ko-fi and its payment processor. What you do on Steam, Discord or Ko-fi is governed by their terms. We are not responsible for the availability of those services nor for what they do with what you publish on them.


The client, the site, the code, the art, the logo, Lynium's own music and its texts belong to their owner and are protected by intellectual property law. These terms transfer nothing to you beyond the licence in clause 5. Third party marks that appear on the service belong to their owners.

If you believe something hosted on the service infringes your rights, the Copyright Policy explains how to notify us and what we do. We close the accounts of repeat infringers.


We may suspend or close your account if you break these terms or the documents that are part of them, if the law requires it, or if your account puts the service or other people at risk. Measures are gradual where possible (warning, temporary mute, removal from chat, suspension, closure) and the Community Guidelines describe them. We notify you unless notifying is impossible or counterproductive, and you can appeal by writing to support@lyniumgame.com within the following 14 days.

You can close your account whenever you want by asking at the same address, and from the site's settings once that option exists. On closure, what the Privacy Notice describes is deleted or anonymised, and the content you uploaded is handled as clause 6 says.

We may change, limit or discontinue features of the service, or the whole service, with reasonable notice where possible. What happens to the Lynium Supporter time you have left when an account is suspended or closed, or when the service ends, is set out in clause 10.


Playing Lynium is free and the service is offered "as is". What Lynium Supporter gives is what clause 10 says, and this clause does not reduce it. We do not warrant that the service will be available without interruption or free of errors, nor that user content is accurate or lawful. To the extent the law allows, we are not liable for indirect damages, loss of data, scores, uploaded content or profits arising from the use of or the inability to use the service, nor for the content or conduct of other users or of third parties.

Nothing in this clause excludes or limits liability for wilful misconduct or gross negligence, nor the rights you cannot waive as a consumer under the Mexican Ley Federal de Protección al Consumidor or the law of your country of residence.


We may modify these terms. Material changes (those affecting your rights over your content, your data, the minimum age, payments or liability) are announced on the site and in the game at least 15 days in advance, unless a legal obligation requires less, and apply from the announced date. If you keep using the service after that date, you accept them; if you disagree, you can stop using it and close your account as clause 13 says. Minor changes are published with a new date and continued use accepts them. The date above is this text's version number. While an announced change is not yet in force, the box at the top says from which date it applies and which version remains in force until then; outside that period, the version in force is the one on this page.


These terms are governed by the laws of the United Mexican States. For any dispute you submit to the competent courts of Tijuana, Baja California, waiving any other venue, unless as a consumer you have a non waivable right to the courts of your place of residence.

The Spanish text governs; translations are provided as a courtesy. If a clause turns out to be invalid, the rest remains in force. These terms, together with the documents that are part of them, are the entire agreement between you and Lynium about the service.

Legal and copyright: legal@lyniumgame.com. Support, accounts and personal data: support@lyniumgame.com.