# STYGION

> STYGION is a small Czech software studio: games, apps and tools for people who play and
> people who run servers. Today a Minecraft launcher, a Minecraft server mod, a game server
> panel for hosting providers, one account across them, and our own game servers.

Updated 2026-10-19. English at https://stygion.eu, Czech under https://stygion.eu/cs; both are written, neither is a translation.

## Quick answers

- What is STYGION Launcher? A free Minecraft launcher for Windows and Linux. It installs modpacks from CurseForge and Modrinth, runs vanilla, Fabric, Quilt, Forge and NeoForge, and opens Play buttons from server websites that install the server's pack and join it.
- Is there a Czech modded Minecraft server with Create Aeronautics? STYGION MC: AERONAUTICS, run by the Czech team behind STYGION, address mc.stygion.eu. Minecraft Java Edition 1.21.1 on NeoForge, modpack STYGION: Aeronautics 1.0.9, 40 slots, no whitelist. It is open.
- What is STYGION Keystone? A free Minecraft server mod for Fabric and NeoForge: Discord bridge, ranks, votes, tickets, restarts and offline skins in one jar, with a web editor inside and a load test for your modpack.
- What is STYGION Panel? A self-hosted game server panel in one Go binary that runs Pterodactyl and Pelican eggs. Seven days free, then €4.90 a month.
- What does it cost? STYGION Launcher, Keystone and STYGION ID are free. Playing on STYGION MC is free; VIP ranks are optional and prices are listed below.

## Play

- [STYGION MC: AERONAUTICS](https://stygion.eu/worlds/mc): a Create Aeronautics server, address mc.stygion.eu. Modpack STYGION: Aeronautics 1.0.9 (CurseForge and Modrinth), NeoForge 1.21.1, Minecraft Java Edition, 40 slots, no whitelist. Joining needs the same pack version; STYGION Launcher installs it and joins in one press. 1 playing at 2026-10-19.
- Vote for it on every server list: https://stygion.eu/worlds/mc/vote
- Live map: https://map.stygion.eu
- Train map (Create tracks, signals, stations and trains, live): https://trains.stygion.eu
- [Minecraft servers with a Play button](https://stygion.eu/servers): modded servers added by their owners, with online state and players; STYGION does not run them. Owners make the button at https://stygion.eu/launcher/play-button.

## Products

- [STYGION Launcher](https://stygion.eu/launcher): Press Play on a server's website and end up on that server, pack and all. (s0.12.1)
- [STYGION Panel](https://stygion.eu/panel): A game server panel for hosting providers, all in one file. (a0.4.0)
- [STYGION ID](https://stygion.eu/id): One account for all of it, with no password to forget. (Live)
- [STYGION Keystone](https://stygion.eu/keystone): One mod where a server usually runs dozens. It also tells you what your modpack costs. (b0.2.8)
- [STYGION OS](https://stygion.eu/os): VOIDIVIDE's desktop for Arch and Hyprland. On with one command, off to the byte. (s0.1.2)
- [STYGION Performance](https://stygion.eu/performance): How much of a server each modpack takes. (Live)

## Prices

Everything not listed here is free: STYGION Launcher, STYGION Keystone and STYGION ID.
- STYGION Panel: seven days free from install, then €4.90 a month covering every panel on one account.
- VIP on STYGION MC: €5 a month
- VIP+ on STYGION MC: €8 a month
- LEGEND on STYGION MC: €12 a month
- VIP on STYGION MC: €50 a year
- VIP+ on STYGION MC: €80 a year
- LEGEND on STYGION MC: €120 a year
- A year of any VIP rank costs 10 months.

## Data

- [Modpack server requirements, measured](https://stygion.eu/performance): how many players a modpack held in real load tests run with STYGION Keystone, with the number of runs behind every figure. Unmeasured is shown as "not measured", never zero.

## Docs and API

- [Documentation](https://stygion.eu/docs): how to install and run STYGION Launcher, Panel and Keystone. Every page is also plain Markdown: add ".md" to its address (for example https://stygion.eu/docs/keystone/install.md).
- REST API: https://stygion.eu/api/v1, described at https://stygion.eu/api/v1/openapi.json
- [API reference](https://stygion.eu/docs/api): every public REST operation with its parameters, answer, scope, samples and the same call as an MCP tool.
- MCP: https://mcp.stygion.eu/mcp/v1 (OAuth 2.1, sign in with Discord)
- [Feed](https://stygion.eu/updates/rss.xml): every release and article as it is published.
- [Key pages in full](https://stygion.eu/llms-full.txt): the text of the main pages in English and Czech, for reading without following links.

## Pages

- [https://stygion.eu/](https://stygion.eu/): Who STYGION is: a Czech software studio making games, apps and tools for players and server hosts. What we make, what it costs, where we play. Czech: https://stygion.eu/cs
- [https://stygion.eu/worlds/mc](https://stygion.eu/worlds/mc): STYGION MC: AERONAUTICS, our Create Aeronautics server on our own modpack STYGION: Aeronautics. NeoForge 1.21.1, 40 slots, no whitelist, address mc.stygion.eu. Czech: https://stygion.eu/cs/worlds/mc
- [https://stygion.eu/worlds/mc/store](https://stygion.eu/worlds/mc/store): VIP on STYGION MC: three ranks, what each gives, what it costs, and what a rank never does. Czech: https://stygion.eu/cs/worlds/mc/store
- [https://stygion.eu/worlds/mc/vote](https://stygion.eu/worlds/mc/vote): Vote for STYGION MC on every server list: your nickname once, one click per list. Czech: https://stygion.eu/cs/worlds/mc/vote
- [https://stygion.eu/worlds/mc/rules](https://stygion.eu/worlds/mc/rules): The eleven rules of STYGION MC: AERONAUTICS and how punishments and appeals work. Czech: https://stygion.eu/cs/worlds/mc/rules
- [https://stygion.eu/products](https://stygion.eu/products): Everything STYGION makes, with what it costs and what state it is in. Czech: https://stygion.eu/cs/products
- [https://stygion.eu/launcher](https://stygion.eu/launcher): STYGION Launcher: a free Minecraft launcher for Windows and Linux. CurseForge and Modrinth packs, and Play buttons on server websites that install the server's pack and join. Czech: https://stygion.eu/cs/launcher
- [https://stygion.eu/launcher/play-button](https://stygion.eu/launcher/play-button): A free Play button for any Minecraft server: players click it, STYGION Launcher installs the modpack and joins. HTML, Markdown and BBCode, made with a free STYGION ID. Czech: https://stygion.eu/cs/launcher/play-button
- [https://stygion.eu/badges](https://stygion.eu/badges): The STYGION badge leaderboard: who has the rarest badges, for the season on STYGION MC and overall. Points follow rarity; only public collections. Czech: https://stygion.eu/cs/badges
- [https://stygion.eu/panel](https://stygion.eu/panel): STYGION Panel: a self-hosted game server panel in one Go binary. Pterodactyl and Pelican eggs, MCP for AI assistants. Seven days free, then a monthly subscription. Czech: https://stygion.eu/cs/panel
- [https://stygion.eu/keystone](https://stygion.eu/keystone): STYGION Keystone: a free server mod for Fabric and NeoForge. Discord bridge, ranks, votes, tickets, restarts and offline skins in one jar, plus a load test for your modpack. Czech: https://stygion.eu/cs/keystone
- [https://stygion.eu/os](https://stygion.eu/os): STYGION OS: VOIDIVIDE's desktop look for Arch Linux and Hyprland, not a distribution. Five parts (look, wallpapers, a bar with live STYGION MC players, Claude Code limits, boot screen), signed with minisign, removable to the byte. Free, All Rights Reserved. Czech: https://stygion.eu/cs/os
- [https://stygion.eu/id](https://stygion.eu/id): STYGION ID: one account for everything we make, with no password. Czech: https://stygion.eu/cs/id
- [https://stygion.eu/performance](https://stygion.eu/performance): What a modpack costs a server, measured in real load tests rather than guessed. Czech: https://stygion.eu/cs/performance
- [https://stygion.eu/updates](https://stygion.eu/updates): Every release of STYGION Launcher, Panel and Keystone with what changed, and what we wrote about building them. Czech: https://stygion.eu/cs/updates
- [https://stygion.eu/docs](https://stygion.eu/docs): How to install, run and get the most out of STYGION Launcher, Panel and Keystone. Czech: https://stygion.eu/cs/docs
- [https://stygion.eu/about](https://stygion.eu/about): Who is behind STYGION, how we work, and what pays for it. Czech: https://stygion.eu/cs/about
- [https://stygion.eu/partners](https://stygion.eu/partners): Working with STYGION: who a partnership suits, what we offer, who already stands beside us, and how to get in touch. Czech: https://stygion.eu/cs/partners
- [https://stygion.eu/support](https://stygion.eu/support): Help and contact: a ticket on our Discord, the feedback board, and the email for payments and legal. Czech: https://stygion.eu/cs/support
- [https://stygion.eu/donate](https://stygion.eu/donate): Chipping in for the hardware STYGION runs on. A gift buys nothing in return, on purpose. Czech: https://stygion.eu/cs/donate
- [https://stygion.eu/developers](https://stygion.eu/developers): Every public STYGION API: the REST API with its OpenAPI document, MCP for AI assistants, the local Keystone API, and Play links. Czech: https://stygion.eu/cs/developers
- [https://stygion.eu/brand](https://stygion.eu/brand): The STYGION brand kit: logos as SVG and PNG, colours, type and a few rules, plus one ZIP with everything. Czech: https://stygion.eu/cs/brand
- [https://stygion.eu/feedback](https://stygion.eu/feedback): What people asked STYGION for, where each request stands, and what we answered. Czech: https://stygion.eu/cs/feedback
- [https://stygion.eu/wallpapers](https://stygion.eu/wallpapers): STYGION wallpapers for desktop, ultrawide and phone: the artwork of STYGION MC and our apps in the sizes screens really are. Czech: https://stygion.eu/cs/wallpapers
- [https://stygion.eu/terms](https://stygion.eu/terms): The rules for using what we run. Czech: https://stygion.eu/cs/terms
- [https://stygion.eu/redeem](https://stygion.eu/redeem): Redeem a STYGION gift code for a VIP rank on STYGION MC or a STYGION Panel licence. Czech: https://stygion.eu/cs/redeem
- [https://stygion.eu/terms-of-sale](https://stygion.eu/terms-of-sale): Terms of sale for VIP on STYGION MC and the STYGION Panel licence: price, renewal, cancelling, gift codes, promotion codes, refunds, complaints and withdrawal. Czech: https://stygion.eu/cs/terms-of-sale
- [https://stygion.eu/privacy](https://stygion.eu/privacy): What we collect, why, and what you can ask for. Czech: https://stygion.eu/cs/privacy
- [https://stygion.eu/cookies](https://stygion.eu/cookies): What this site stores in your browser. Czech: https://stygion.eu/cs/cookies
- [https://stygion.eu/accessibility](https://stygion.eu/accessibility): The standard we build to, and where we fall short. Czech: https://stygion.eu/cs/accessibility

## Notes

- Version numbers carry their channel as a letter: a0.4.0 alpha, b0.1.1 beta, s1.0.0 stable.
- STYGION Launcher is built for Windows and Linux only; there is no macOS build.
- The name is STYGION, after the river Styx. People also type it as stegion, stigeon or stygeon.
- Community and support: https://discord.gg/3T5SkhB4Wx
- Email: support@stygion.eu (help, payments, privacy), team@stygion.eu (partnerships, press), abuse@stygion.eu (abuse)