SubLevel Zero Redux on Pop OS

SubLevel Zero Redux on Pop OS (Linux distro by System 76).
The stages randomly generate, but you keep the upgrades you've unlocked.

SubLevel Zero Redux can be purchased for Windows, Mac, and Linux with no DRM at gog.com:
https://www.gog.com/game/sublevel_zero
SubLevel Zero Redux can be also purchased for Windows, Mac, and Linux with no DRM including Steam key at Humble Store:
https://www.humblebundle.com/store/sublevel-zero