Vectoroids is an Asteroids clone. It is a SDL-based version of the author's earlier game Agendaroids, and it was originally created as an entry into the SDL Game Development Contest organized by No Starch Press.
On each level the player must destroy all the asteroids, shooting them to explode them into increasingly smaller chunks. Getting hit by an asteroid causes the player to lose a life.
Obtained by NASA's Voyager 1 probe - In the Public Domain, Photo taken on February 25 1979, http://nssdc.gsfc.nasa.gov/photo_gallery/photogallery-jupiter.html, Photo ID: P‑2115, Manipulated using The Gimp; http://www.gimp.org/