if you havent played Geometry Wars, you should. its fun, and if you thought Geometry class sucked, now you can take revenge!
Geometry Wars is available on a variety of devices, the original Retro Evolved is on Steam

i really like geometry wars

Retro Evolved (Where It All Started, good):
Xbox (XBLA and maybe Xbox One?)
Steam
DS (Included as submode in Galaxies)

Retro Evolved 2 (havent played this one):
Xbox (XBLA and maybe Xbox One?)

Galaxies (DS and Wii, I can vouch this ones killer)

Dimensions/Dimensions Evolved (am playing rn, its galaxies but cooler):
PS4, PSVita
Xbox
Steam/PC
Android (Delisted/hidden?)