# Credits

> The people and projects Orbium builds on, the licences they come under, and where each one is credited.

Orbium stands on other people's work. This page names it, with the licence it
comes under and where it is credited in full.

## The engine

The engine that draws every World started as
[Tidewater](https://github.com/dgreenheck/tidewater), by Daniel Greenheck: a
WebGPU ocean and island renderer. Orbium keeps it in step with Tidewater and
builds its own systems on top. See [the engine](https://orbium.games/docs/developers/engine).

## Clouds

The volumetric clouds, and the noise volumes they are shaped from, are adapted
from DRG Software Solutions' **Sky Pro WebGPU**, published with Tidewater by its
copyright holder.

## Anti-aliasing

The lookup textures of the SMAA anti-aliasing come from
[three.js](https://github.com/mrdoob/three.js) (MIT licence), which takes them
from Jorge Jimenez et al.'s
[SMAA reference implementation](https://github.com/iryoku/smaa).

## Sounds

Every sound in the games is a real recording from
[Freesound](https://freesound.org), under
[CC0 1.0](https://creativecommons.org/publicdomain/zero/1.0/) (a public domain
dedication). CC0 asks for no attribution; we give it anyway, recording by
recording, with its author and what it is used for:
[the sound credits](https://orbium.games/audio/CREDITS.md). The booster's roar and the bolts' sizzle
are synthesized.

## Fonts

**General Sans** and **Satoshi** are by the Indian Type Foundry, from
[Fontshare](https://www.fontshare.com), under the ITF Free Font License. We
serve them from our own site, unchanged, as the licence allows.

## The stack

Orbium runs on [WebGPU](https://www.w3.org/TR/webgpu/),
[Deno](https://deno.com), [Vite](https://vite.dev), [Celld](https://celld.dev),
[Cloudflare](https://www.cloudflare.com) and
[Google Cloud](https://cloud.google.com). The Docs are rendered with
[Marked](https://marked.js.org) and their code coloured with
[Shiki](https://shiki.style). [Claude](https://www.anthropic.com), by Anthropic,
writes the code with us.

## Missing someone?

If something of yours is in Orbium and not credited here, tell us on
[Discord](https://discord.gg/orbiumgames) and we will put it right.