The Game is built with open-source and third-party software, used under their respective permissive licenses. Notable components include:
- Bevy (game engine) - MIT OR Apache-2.0
- wgpu (graphics) - MIT OR Apache-2.0
- winit (windowing) - Apache-2.0
- serde (serialization framework) - MIT OR Apache-2.0
- ron (Rusty Object Notation, save/config data) - MIT OR Apache-2.0
- postcard (binary serialization for netcode) - MIT OR Apache-2.0
- rand and rand_xoshiro (deterministic random number generation) - MIT OR Apache-2.0
- fixed (fixed-point arithmetic for the deterministic simulation) - MIT OR Apache-2.0
- xxhash-rust (hashing, used for determinism verification) - MIT OR Apache-2.0
- dirs (per-platform configuration directory resolution) - MIT OR Apache-2.0
- The Rust standard library and toolchain - MIT OR Apache-2.0
- Additional Rust crates, each used under their own MIT, Apache-2.0, or similarly permissive open-source license.
The Steam build of the Game links Valve's Steamworks SDK (the steam_api64 library installed beside the Game's executable), which is Valve's proprietary software used under the Steamworks SDK Access Agreement and is not covered by the open-source licenses above.
Content Provenance and AI Disclosure
Two different things are true, and both are stated here so that neither is misread: the Game was made with AI coding tools, and the Game contains no AI-generated media.
MADE WITH AI CODING TOOLS. AI coding assistants (large language models used as development tools) were used throughout development, under the Developer's direction: they wrote the Game's program code, the parameter files that code reads, the Game's written text, and these documents. The Developer set the requirements, reviewed and tested the results, decided what shipped, and is responsible for everything the Game contains. Where a distribution platform asks whether AI tools were used to create content during development, the honest answer is yes, in exactly that sense, and this is what the Game discloses.
NO AI-GENERATED MEDIA. No machine-learning model generated any image, sound, or piece of music in the Game. Every image the Game shows is rendered by the Game's own procedural code, and every sound is SYNTHESIZED: computed by the Game's own signal-processing code from written parameter files kept in the Game's source repository. The music is composed and performed the same way, by the Game's own generative-orchestra code, instrument by instrument. No sample library, soundfont, recording, or third-party audio data of any kind was used to produce any of it, and none is contained in or distributed with the Game.
The tools used to build the audio library are the Game's own Rust and Python code together with FFmpeg, all invoked as external programs; none of them is linked into or distributed with the Game. Their licenses are listed with the other third-party components above and in THIRD-PARTY-LICENSES.txt.
CHANGED 2026-08-17. An earlier draft of this document disclosed that the Game's sound effects had been generated with ACE-Step, a machine-learning model. That is no longer true of any file in the Game: the entire audio library was re-created by synthesis and every generated file was removed from the build on that date. The Game's store page disclosure was changed at the same time. This note is kept so the change is on the record rather than silent.
A complete, machine-generated list of all third-party components and their full license texts is distributed alongside the Game as THIRD-PARTY-LICENSES.txt, in the same folder as the Game's executable. Nothing in the End User License Agreement restricts your rights under those components' own open-source licenses.
Acceptance
This is LEGAL DOCUMENT VERSION 4, dated 2026-09-13.
By selecting "Accept", you confirm that you have read and agree to the Health and Safety Warning, the End User License Agreement, the Privacy Policy, the Code of Conduct, and the Content Disclaimer presented in this gate; that you are old enough to accept them where you live, or that a parent or legal guardian has accepted them for you; that you understand the Game contains graphic violence intended for adults; that you understand the Game is an Early Access title that is unfinished and may change substantially; that you understand online play has no Developer server and sends the data described in the Privacy Policy to the player who hosts your match; and that you understand leaving or going absent from a live ranked match carries the penalties described in the Code of Conduct.
If you select "Decline", the Game will close and you will not be able to play it. If the Developer makes material changes to these documents, the version number will increase and you will be asked to review and re-accept before continuing.