Geometry Wars is a game series originally conceived by Bizarre Creations which made its first appearance as a mini-game in the racing game Project Gotham Racing 2.
The player controls a ship that can be both maneuvered and fired seamlessly, this ship is then pitted against increasing waves of enemies of various shapes and sizes, each with their own behaviors.
There are currently 3 numbered main entries in the series, along with 2 spin-offs, the latest game being Geometry Wars 3: Dimensions Evolved, created by Lucid Games.
No matter which one of all the different game modes the player decides to play, the objective is to survive, destroy everything that moves, score droves of points and by doing so, climb the leaderboards.
Good luck.