Simply a fast, fun racing game. Instead of one race going by the same time, everybody races on their own time and tries to make a race with the fastest time. In this game, nobody has any advantage, so if somebody wins, then it wasn't because they had a better start position or a better car, they just had skill. So this game is 100% focused on skill.
NOTE: This is the free, limited version of the game. It's still playable as a full game, but you will have limits like multiplayer where you have to set out every 5th race, or that your custom car models and skins only show to you etc.. If you want the entirely full game, you can buy Trackmania United for 29,99€, also available on Steam.
My rating to this game is 9/10. Simply fun, and it has absolutely no elements that make the game unfair.