skyrim with expansions, hd textures and mods = epic.
planetside 2 is epic if you got a good gaming pc.
Haven't played GW2 but the way you get more in game items the more you pay makes me avoid it.
Just Cause 2 is fun to just troll the map.
May I suggest jagged alliance: back in action.
jagged alliance? never heard of it, but ill check it out