Kawariki is a Steam Play compatible tool for running games using different (usually newer) versions of their engine than they shipped with. This includes running games that only have a Windows build on a linux-native version.
Requires at least Python 3.8.
Just install it into compatibilitytools.d like a custom Proton release. You can then select it in the game properties dialog. You shouldn't set it globally in the settings dialog as it doesn't try to handle arbitrary Windows games.
Some environment variables are available to influence Kawariki.
These can be used in the Steam launch options like with Proton. E.g. KAWARIKI_SDK=1 %command%
See the runtime documentations for info.
The CLI brings some options for non-Steam games and developers:
./kawariki run <path-to-game>will try to run a game through Kawariki (As trough Steam Play)./kawariki launcher <path-to-game> [filename]Will create a launcher script in the game folder that runs the game trough Kawariki
For more info see ./kawariki --help
Kawariki consists of a number of 'runtimes', each handling games built with a specific set of common engines.
Games based on web technologies and bundled with the NW.js browser engine.
This includes games based on, among others:
- RPGMaker MV
- RPGMaker MZ
- Tyrano Builder
There is experimental support for RPGMaker games based on RGSS using the mkxp-z project.
RPGMaker editions based on RGSS are:
- RPGMaker XP (RGSS1)
- RPGMaker VX (RGSS2)
- RPGMaker VX Ace (RGSS3)
Kawariki kan run Ren'Py games using the Ren'Py SDK.
There is also experimental support for running Godot games.
To avoid modifying the game installation, Linux namespaces are used to 'overlay' the custom files over the install directory.
This requires unprivileged user namespaces to be enabled in the kernel
For example, In some versions of Ubuntu/Debian it can be enabled with
sysctl -w kernel.unprivileged_userns_clone=1
The overlayns binary works similarly to unshare(1) except it allows mounts to be specified on the commandline.
The code itself (kawariki) is GPL3+. Generated files like launcher scripts shall be CC0. NW.js, Greenworks and Steamworks have their respective licenses.
Some components, specifically patches to and ports of popular engine plugin scripts belong to their original authors and have their own license terms. If you are the original author of one of the included scripts and want it removed, please open an issue on GitHub.