I have to name one no one has. Rainbow Six: Vegas. It has the best cover system I've ever used, by far. Gears of War is sort of similar in the cover, but not nearly as good. I actually find it very arcade-y after playing Vegas. If you're tired of UT's endless run and gun (yes, that's my opinion) then you may wanna try this. I believe it's classed as a tactical shooter, meaning you have to THINK while you progress. Hard to beat Company of Heroes for RTS. There's a reason it scored higher than any other RTS in history. The Opposing Fronts standalone/xpac is a MUST if you like the original game. Oh and for the record, I hated all the old rainbow six titles and a friend had to talk me into trying this one. Pwns.