+1 for a tentative Overcooked suggestion but only if you think you and your cousin won't strangle each other in a high stress scenario. I can't play the game with my wife because she's too goofy and I'm too serious.
Bread and Fred looks like a lot of fun but I haven't actually played it yet.
Diablo 3 was fun playing couch co-op and reminded me more than a little bit of playing Gauntlet in the good old days.
Why choose one country? I'm selling everything and buying a boat.