[doodpants]

My favorite Asteroids clone was a game for the Macintosh in the 90s that featured hemispherical rocks, titled "HemiRoids".

https://www.youtube.com/watch?v=l_Llp_jHv1c

[snerbles]

Mine was Hyperoid, which was left as a goodie by the local system builder who assembled my parents' 486:

https://archive.org/details/win3_Hyperoid