Favored Freeware: Argonaut

Argonaut is a modernized clone of Asteroids with 3D OpenGL graphics.

Join the lucrative trade of crystal mining! Navigate through deadly asteroid fields, do battle with menacing pirates and loathsome scavengers, and gather wealth for the purchase of powerful weapons and power-ups in this arcade style asteroids game.

Pros: Argonaut is just pure fun with engaging gameplay and some of the best graphics in the genre.

Cons: None significant.