This is the original and still the best friendship destroying game of all time.
Enjoy.
http://en.wikipedia.org/wiki/Diplomacy_(game)
I post this for the future generations that say verily unto the equus africanus asinus; "Why equus africanus asinus, why don't we have in game mechanics for x and y.", "Why don't we have in game factions?" and "ahhhh carebares rage game ruins I kill you I kill you!"
The answer is simple; people are bastards and you can always rely on the kindness of strangers.
-------------------------
COCK GOBLINS!!!
Can an admin please move this to off topic. *facepalm*