An interesting blog to make the point about engines....

[SgtH3nry3]

Yellowbelly Wrote:Oblivion is on GameBryo? I\'m pretty sure that\'s the first game to come out on the Unreal 3 engine. And not only that, it by no means lacks graphics so I don\'t see how it\'s on GameBryo.

Nope it uses GameBryo 2.0 with the Havok physics engine and SpeedTree RT.

The very first planned UE3.0 was Unreal Tournament 2007, afterwards came Gears of War (the very first working game on UE3.0), Duke Nukem Forever, and then all the other stuff like Brothers in Arms 3.0, Red Orchestra, a new Men of Valor!?!?!, Turok 4, etc was planned.

But Oblivion actually uses the second version of the NetImmerse engine which Morrowind and Neverwinter Nights used called GameBryo 2.

And btw. it\'s Unreal Engine 3(.0) and not Unreal 3 Engine because Unreal 3 doesn\'t exist, and I doubt the plans don\'t exist as well.
Probably Unreal 3 will be powered by Unreal Engine 4.0...