Hi, and thanks for this game!
It works fine on Linux (Kernel 5.3.x, Intel HD3000 graphic card, Mesa 20.2 graphic driver, OpenGL 3.3).
I'll be happy to play it again in the future if you'll have time (I hope) to make some update (for instance on UI and other graphics/aesthetic aspects like levels context and music variations).
Also I would ask you what does that starfish indicate when it appears on the upper left of the screen in some levels?
Thanks again for your work!