Made in 48 hours for the Ludum Dare 48 Compo Game Jam, with the theme "Deeper and deeper".

Fall onto an alien planet and explore deep undersea caves. Take on ballast to descend further, but beware of the hostile flora and fauna.

Note: The web version may take a little while to load, and will sometimes stall when switching screens; if it seems unresponsive and unmoving on the FMod logo, try clicking the window. If these don't fix it, please try out the Windows version!


Keyboard and all common joysticks and game controllers are supported.

WSAD / Arrow keys / Controller stickMove
R / Top controller button(HOLD) Reset to last checkpoint


unfathomable-win64.zip 32 MB
Version 3 Apr 26, 2021

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