TrackMania is a successful series of arcade racing games for Windows, which include stunting with cars, track-building, elements from puzzle games, as well as elements testing the players' dexterity. It was developed by the French team Nadeo for the PC. Instead of following the usual trend of choosing a set car and track for playing in the game, the TrackMania games allow the player to create their own tracks using a simple "Block" process in the spirit of the 1985 game Racing Destruction Set and the 1990 Bröderbund release, Stunts.
In contrast with most other racing games, the TrackMania series lets the player race a track as many times as he/she wants, until time runs out. He/she can choose to respawn at any time possible, due to landing upside down, going off the track, or even just because the start did not go optimally. Although in multiplayer games multiple cars race on the same track, they cannot actually collide or otherwise influence each other.
Since United there's also an integrated webbrowser system and lots of community stuff.
Now they've released Forever which is an upgrade to both United and Nations and there is no starforce copyright protection anymore!