I decided to post about this, although there's an expired version of this relating to GAME. Also, I've played this for a while, and during the last month or so, seen many people come onto servers saying they just purchased "Trackmania United Forever" when the "Forever" side of things, was released as a FREE upgrade. So I decided to help out dealseekers and give them a real deal. Next cheapest I could find this game was £12.97 @ Amazon (United) and £15.49 @ PowerPlayDirect (United Forever). Below is a personal game intro, as I can't stand the developers/marketing versions or any product.
Trackmania United is a racing game with a difference. The game comes with 7 environments (Desert, Rally, Snow, Island, Bay Coast and Stadium) complete with 7 environment specific cars, fully customisable and ready to be mastered. Each environment and car has its own unique qualities and drawbacks for the driver. The cars in each environment are all equal, and the onus is on the drivers skill to win. With several types of competition both online (Time Attack, Rounds, Laps & Team) and offline (Race, Platform, Stunt & Puzzle). However that's just where the fun begins, the real fun is in the tracks side of the game - hence the title. Users have the option to play any track they want, in any style and environment, and if it's not been created by the developer, or by another user, a couple of minutes, hours, days in the track editor should help you produce exactly the track you want. Theres also the Paint editor in which you can customise your car, and about 10,000 people playing every day online to help you out with anything, with a few simply brilliant community sites packed full of tutorials, custom content and links to many of the teams which you may decide to join.
Aside from all of the above, this game just got a fairly big update (Trackmania Nations Forever - 900mb download) which has a big update to the first 3 environments as list above, integration with the free version of the game - players playing both United and Nations on the same servers.
For the Free update, click the upgrade button on the game launcher or alternatively, visit http://www.focus-files.com/tmuf/