Spawned by the popularity of Nintendo's Brain Age series, the trend in portable games is toward those which can make you smarter. Not so much with this one. Based on Johnny Knoxville's MTV show and two movies, Jackass: The Game for PSP lets players make jackasses out of themselves with outrageous competitions as one of their favorite Jackass characters.

You can race a shopping cart against an opponent to see which player reaches the finish line first -- but you're on top of a skyscraper, so if you don't stop the cart fast enough you'll end up over the edge plunging to your death. In a Dance Dance Revolution-like rhythm game, you must press the correct button on the PSP at the right time in order to rack up points. Sounds familiar, right? Well, you're wearing a jock strap and dancing in a retail store before the clerk kicks you out. What about using an umbrella to prevent getting hit with animal dung sprayed out of a hose? You get the idea.

One of the more fun exercises is driving a golf cart through a course; your goal is to inflict as much damage as you can within the time limit. A similar mission has you careening through a suburban area on top of a garbage can, while holding a rope attached to a speeding car. If you slam into parked cars you might break a few bones, but you get an "abrasion bonus." Problem is, not only are these activities dumb, but they're not very challenging, so the novelty wears off fast. That said, fans of the show might enjoy the increasingly insane and asinine stunts.