What's yours is mine!
Developer: Pocketwatch Games
Platforms: Windows, Mac
Monaco is a single player or co-op heist game. Assemble a crack team of thieves, case the joint, and pull off the perfect heist. You can choose from a number of different characters, each with their own skills and abilities. This is not a stealth game, the developers have been quick to clarify.
I've been following this game for a long time, and now it's finally set to release in April. I've only ever heard good things about it.
A potential problem in the way of getting this on IGS is that the game has already been getting a lot of attention, and with their launch so close, they're probably not going to want to drop the price.