Ubisoft is offering limited free access to the beta of online multiplayer support in Trials Fusion, the Windows edition of the motorcycle racing sequel. This is expected to come to both the Windows and console editions of the game via a free update early next year. Free access should now be underway, and the game's website has more details on what to expect:

We’re happy to announce the Trials Fusion PC Multiplayer Beta Open Weekend. Anyone who owns a PC (that meets the minimum system requirements) can pick up 3 days of Trials Fusion MP playtime during the Beta Open Weekend. All you have to do is open the Uplay PC Client, click the Free tab in the top left, and selecting Trials Fusion Multiplayer Beta.

Starting at approximately 10am CET on Friday, December 19th and running until approximately 10am CET on Monday, December 22nd, players can experience the 8-player intensity of Trials Fusion multiplayer in public matches, as well as the insanity of setting up their own custom experience with modifiers in private matches.

Track builders can also get an early look at X-Supercross specific editor features and get a feel for how their creation workflow might change when Multiplayer launches for all platforms in early 2015. Creative players can even take the opportunity to enter a track in our Beta Buildoff Challenge.