Spacestation Silicon Valley
The game starts out with the two main characters, EVO and his human friend, crashing onto a hostile planet/spacestation called 'Silicon Valley', which was apparently an experiment to place artificial intelligence into robotic animals that went haywire and the animals ended up turning on their scientist creators and destroying them. The two main characters were advertised as 'heroes for hire' and sent to take control of the space station. Really, it's sort of a goofier Jurassic Park concept, when you think about it.
In the beginning intro of the game, a robotic dog is killed in the crash, and EVO, now being a microchip without a body, hops into the corpse of the dead dog and takes control-- And that's where the game begins.
So basically, you go through the game killing and taking the forms of various animals across the world in order to complete your objectives and finally get your body back. A few examples of the crazy animals you get to play as are: A fox on wheels, a rat that can drop explosive poop, a polar bear tank (that shoots cannonballs) and a wolf on ski's. And that's just one of the many ridiculous animals on the space station.
The difficult part was always actually KILLING the animals so you could take their form, since some of them were especially hard to take down and you literally had to sneak up on them half the time, or else they'd spot you and kill you first.
Anyway, I always thought it was a pretty fun concept and one I'd love to see redone and made better someday. The game was unfortunately, full of glitches and flaws and could've been so much more than it was.