Amazon is running an all videogame Gold Box event today. The centerpiece item is EA's Dead Space 3 for only $39.99 on your platform of choice - Xbox 360, PlayStation 3, or PC. It's a game we quite enjoyed for both single player and its two player online co-op. Despite it being a little action heavy, we feel it fits the series quite well. You can always check out our Dead Space 3 Co-Op FAQ if you have any questions about it.
Other upcoming games look to be Epic Mickey 2, some zombie game (which a good chunk of have co-op), and several other possibilities. The deal length on each item varies between one hour and three hours so check back to the Gold Box page often.