Crysis

A next-generation project by CryTek, makers of the dazzling FPS Far Cry. This game is running on the new CryENGINE 2 technology. The game is one of the the first announced to run on the advanced DirectX 10 architecture.
Some features include gorgeous and immersive graphics, amazing engine, stunning environment, weapon customisation, ability boosts (which will add some rpg elements) and facing off against giant alien robots.
Check out the screen shots aswell.