This is a perfect example of a free-to-play title. There's all the content available, and paying for anything is just an option rather than an imposition. On the top of that, is fun, entertaining and full of options.
As much as we would love to say Trial Xtreme 3 is the rebirth of the genre, it proves to be the exact opposite. Absurd spikes in difficulty don't do much to help matters along the way either. Downloader beware, this is not the Trials you should be looking for.