Download this theme. There are no refunds for this item. For more information, see www.xbox.com/live/accounts.

This Big Pack introduces 35 completely new tracks: 23 racing tracks and 12 skill game tracks. Five new tournaments include all the new tracks. For level designers the Big Pack provides more than 50 new crazy physics objects: car, rocket turbine, gravity field, wind, motor and many others! Three new fun achievements to unlock worth 50 extra gamerscore. Fasten your helmet and prepare for serious bruises! There are no refunds for this item. For more information, see www.xbox.com/live/accounts.

Download this trailer.

Download this trailer.

(Online Interactions Not Rated by the ESRB) Play Trials HD, a spectacular, physics-based motorcycle racing platformer. Experience the mind-boggling tracks and amazing graphics, in two unique game modes. Climb the global leaderboards, compete against your friends with new in-game friend-scores, and create new tracks with the level-editor. Can you handle the explosions, extreme jumps and stunts, crashes, and injuries you are about to experience?

Fasten your helmet…and unlock the full version of Trials HD. This physics-based motorcycle game has over 50 brilliant tracks and amazing HD graphics, in two unique game modes. Customize your rider, unlock bikes, climb global leaderboards, and compete with new in-game friend-scores. With the level-editor, create and share an unlimited amount of new tracks. Trials HD is an experience you haven’t seen before!