Asphalt 8 Infinity blade 3 Epoch 2 (current free with an ign promo code) Need for speed: most wanted Galaxy on fire 2 HD Anomaly 2 Sky gamblers: storm raiders Spiral: episode 1 Battle supremacy Horn Riptide gp2 Those are just a few.
The Wolf Among Us looks outstanding on retina displays. I can't recommend this game enough. Third episode is slated for release any day now.
Star Horizon has awesome, awesome graphics. And for a really really really awesome game, try next week's release Unpossible, a merge of Boost 2 with Super Hexagon with console like graphics. It's awesome.