Contrast was a simple puzzle game and other than a great feel really didn't have that much to offer. Bastion I do not get at all - it was horribly linear, short due to limited scope, and very limited gameplay - amazing sound track & voice work but not worthy of retail.
Faery: Legends of Avalon //had the base for much more expansive content
Gotham City Impostors //would have been awesome with a proper campaign.
Orcs Must Die! //just more of this all day long.
Mars: War Logs //a retail sized budget would have added the polish needed to make this a winner
Life, it's funny that way.