Zoo Rampage is the equivalent of an animal train wreck. Taking control of a selection of captive zoo creatures, you are let loose in a map of helpless humans and buildings, free to wreak as much havoc as possible until the bell rings. The idea is outrageous, and for a few minutes actually entertaining, but after a single level Zoo Rampage has already demonstrated to you the entirety of what it is: a shallow, admittedly amusing up to a (very brief) point, game with a serious shortage of content and objectives. Even had it been loaded with levels and modes, the core of its gameplay is so simple that it would ultimately be for naught to try and extend an experience that has already grown stale.
There's really nothing more I can say about Zoo Rampage, so extreme is its curtness that you can see absolutely everything it has to offer in a matter of minutes. It would be a hard sell at a dollar, its only real draw being a silly thing to turn on for a few moments when you have some friends around, but at ten times that it's a sad joke that I desperately hope people do not buy into. Zoo Rampage couldn't fill the average demo, let alone sustain itself as a full retail product.