Excellent game - definitely comes recommended.
A downloadable very nice game for Windows, macOS, and Linux
Blindly stumble into the abyss
Left/right to move character, up or z to jump.
- download archive
- extract archive
- run cyclopean-simulator.exe
Mac & Linux:
- install Love2D: https://love2d.org/
- run `Cyclopean Simulator.love`