Add this to the ‘gone gold’ list: Fatal Inertia. The action-racing game that was originally supposed to launch with the PS3 has finally gone gold and will be released on the Xbox 360 on September 11. A free demo of the game is now available via Xbox Live Marketplace, offering single-player and split-screen two-player races as well as races from the game’s exhibition and elite racing leagues.

Fatal Inertia will include 8-player racing on Xbox Live or on System Link, over 1.3 million race craft customization combinations plus 15,000 performance combinations, 51 courses across six environments and fifty unlockable achievements. The game is powered by Unreal Engine 3 and has been developed in Koei Canada in a team led by producer Takazumi Tomoike, creator of the Dynasty Warriors series, and Koei co-founder and chief advisor Yoichi Erikawa.