A downloadable game for Windows, macOS, and Linux

The theme of PROCJAM 2021 is "Change".

Which, in my case, means producing familiar kinds of output (procedurally generated islands) but changing up how it's done.

And that's to use Penrose tiling for the terrain (and water, and lava) rather than a regular grid.

The game's a bit rough-and-ready (mooch around looking for shinies and throw them into the volcano) but there's a "tourist" mode which lets you whizz around and admire the stunt programming. (Although if you really want to see what's going on under the hood, use "debug" mode to drop the landscape shading in favour of red/blue colouring the two types of underlying P3 rhombs.)

WASD to move, cursor keys to turn, shift to go fast, space to stop/start flying.

It's download-only -- the game uses rendering techniques which are not well supported by WebGL and threading which still has very limited WASM support.

PlatformsWindows, macOS, Linux
Rated 5.0 out of 5 stars
(1 total ratings)
Made withGodot
Code licenseMIT License
LinksSource code


penrose-osx.zip 28 MB
Version 7 Dec 11, 2021
penrose-win64.zip 14 MB
Version 8 Dec 11, 2021
penrose-linux.zip 19 MB
Version 9 Dec 11, 2021


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Generates absolutely beautiful islands. I wish i could get terrain like this!

Thank you! I'd kind of been intending releasing the source for the generator, but it ended up being a bit too tangled up in the game to be useful to anyone else. If I can untangle it enough (and possibly rewrite it in C#) then it'll get a MIT-licensed release.