Battlefield 3 looks amazing on max settings with the new frostbite 2 engine. Many mods out there do lots of things, like HD texture packs and depth of field mods. Even minecraft looks great with a nice HD texture pack and glsl shaders.
For my money, I have to say Trine 2. It's hard not to choose Rayman Origins, since I don't think I've seen another game capture that sunday morning cartoon appeal nearly as well, but Trine 2 is just gorgeous.
can you tell me is crysis 3 and all upcoming game is playable on gtx560ti with 448core bcoz i am going to buy that graphic card in 1080p on high setting with i3 processor540 3.07GHz,4gb ram,mobo p7
THat graphics card should handle them just fine, yes. Here's a great site to compare video cards
http://www.hwcompare.com/6301/geforce-8800-gtx-vs-radeon-hd-6950-2gb/