From Strategyinformer.com: "Nadeo's flagship title Trackmania distilled the elements of a racing game down into a simple, but effective formula. By keeping the racing elements relatively basic, it allowed the developers to add in powerful suites for creative players, designing tracks that could be shared online, while the front-end tracked players statistics across their racing endeavours, ranking them regionally and worldwide".
One Angry Gamer "Now here’s a bit of news you probably didn’t see coming: Nadeo has announced that you can gain free access to their ManiaPlanet games right now, no strings attached. You download the free demo and for 48 hours straight you can play the ManiaPlanet titles for free."
Shootmania Platform, developed by Nadeo, will be free in its current beta form for the whole summer.
The Trackmania games rarely go on sale, so getting any and/or all of them is a recommendation.