Hi there, game is great! The "controllable-with-1-key" pitch with clear physics and increasing difficulty really caught us all (3 persons, teenager to adult).
An annoying bug though, which was already reported by @Infern: the Linux version freezes when too much collisions happen, which can make it nearly unplayable.
Ironically, the Windows version plays smooth under Linux with Wine 6, so I end up using this one. Maybe put a caveat for Linux users?