So up until today I thought UE3 would be responsible for like 50% of today's next generation games. But guess I was wrong. Silicon Knights suing EPIC due to incomplete engine, withholding features of the engine that they used on Gears of War and lack of support.
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Only 2 UE3 games have been released, Roboblitz and Gears of War. Rainbow 6 is based off a modified UE2.5 and all UE3 games have been delayed, and none of the GRAW games use it (I thought UE3 for all).
XI Wiki

