Apparently the crew behind the classic Gears of War on the 360 were showcasing internally just how powerful the Unreal engine is by doing this
Most of us know Microsoft's big bad title, Gears of War. While we're not getting a sequel yet, Epic Games revealed that they're working on a spin-off. Marcus Fenix ain't taking a gun this time, he'll be taking the mustached plumber's lead and have a golf game of his own. Yes, Epic boss Mark Rein confirmed that it's gonna be Gears of War Golf.
Epic went through all the trouble to hear from a Korean publisher about making casual games using Unreal Engine 3, and the results sound good. Rein says "So we got an animator to make a golf swing for Marcus Fenix, and then a programmer took one of the Gears levels and added some mounds and stuff to make a course." GoW's grenade launching mechanic was used for the ball, so let's all hope it reaches the hole safely.
Unfortunately, the project is said to be internal for Epic Games so we won't be seeing the game's launch any time soon. Good things come to those who wait, and Gears of War Golf might be a promising title worth waiting for.
(whole article quoted as usual)
However, Mark Rein himself has turned around and specifically stated that this is ONLY an internal doing, and will never show up as a download (even though it sounds cool):
Nobody is actually playing this nor is there any intention of doing a golf game in the Gears of War franchise. It was simply a demo that one of our programmers whipped up to show off how you could make any kind of game with Unreal Engine 3 - not just the kind of games people had made with it thus far or the kind we tend to make.