Zeno Clash (PC and X-box 360)
This is a brilliant little game made by a small studio in Chile. It's on PC, and thanks to Atlus, will also be making its way to the X-box Live Arcade. The graphics are surreal and brutal, hideous and beautiful. It also has a unique first person fist fighting mechanic that allows for punching, blocking, holds, knee kicks, and combos.
Trials 2 (PC) or Trials HD (X-box 360)
This is not a racing game. It is a physics puzzle. It is probably the most difficult game released this generation and it only uses the direction pad for controls. Your poor little motorcycle man will break every bone in his body a thousand times over.
The Void (PC)
This game is nightmarish and sexual. The haunting environments are both beautiful and unsettling. In a place between death and your final resting place, you must steel color from wherever you can find it and feed it to the beautiful sisters that inhabit this other realm. You kind of have to play it yourself to understand. As one reviewer put it "The Void is so far outside of the realms of helpful description that I might as well phone you up and make animal noises at you".
Hammerfight (PC)
This is a game that gives it's play control mechanic the attention it deserves. You pilot a ship with a large attached mace-like weapon that may be a hammer, ball and chain, or sword. The weapon only works when you build momentum by flying your ship around to get it to swing. This is done by swirling your mouse around to get the mace spinning, while also not letting it throw your ship out of control. It's a really unique gameplay mechanic and it is executed beautifully. It is more than an innovative gameplay demo as well. It also delivers quite a good story full of warring tribes, monster infestations, and being enslaved and forced to battle to the death in tournament's for your enemies' amusement.
Metal Drift (PC)
This is a futuristic arena sport played with high tech teams of hover tanks that battle over possession of a ball to score goals on either side of the maze-like arenas. It's a simple enough concept, but the controls are where it shines. You control your turret independently from your ship which allows for some challenging moments of driving blind forward while shooting at people all around you. Every goal is a struggle.
