Multiplayer has always been a draw for Monkey tomfoolery, and there're six ready to go from the start. Racing and the Hungry Hungry Hippos-esque Monkey Fight are bland, but mini golf and the first-person Monkey War are a blast. An air hockey recreation and so-so bowling sim can't supply the same drinking-game fervor of the console parties, but for a handheld they'll do fine.
It takes all of 10 seconds to understand but countless hours to perfect. Is there a better recipe for a portable game? Just remember how much the DS costs before you launch it across the room in frustration.