A great license and potentially good game held back by stupid additions and easily fixable mechanics.
You do love South Park? Read on.
This game makes good on the license featuring the voices of Matt and Trey, great locations that have recently been in the show (like Pi Pi's Waterpark), and my personal favorite; the ability to change into the Coon, the Human Kite, Toolshed and Mysterion.
I typically don't even like platformers but I did find myself having fun with this game. Despite a sometimes annoying camera (that no co-op platformer is safe from), the co-op is a blast.
The negatives? This game is extremely difficult, especially when new enemies start to show up (Gingers with laser-guided missles were my bane) and almost requires you play co-op to cash in on the extra muscle and lives. The problem? The matchmaking isn't very good with some latency issues.
Bottom line:
For 10 bucks it's hard to beat, given it's flaws. However, if you are lucky enough to have four friends and four controllers and can eliminate the latency/matchmaking issues that online play brings, this is a must buy for the price.