T4R
Doesn't have to end the trilogy. Of the ones I can remember:
0) Metal Gear Solid 3
1) Uncharted 3 & Metroid Prime 3
2) Halo 3
3) Gears of War 3
4) lolBattlefield3
5) Artistic Autodialogue Integrity 3
6) lmaoModernWarfare3
7) lmaoResistance3
8) lmaowtfisthisKillzone3
-
Probably Halo 3 because there was much more to it than the end of the main trilogy.