Scaler - PlayStation 2

Scaler is most unusual game where you'll have to save the world's lizards! You become "Scaler" Johnson, a regular guy whose neighbor is a mad scientist. When the evil neighbor tries to take over the world by mutating his lizards into a monster army, you'll stop by becoming a lizard yourself. Shapeshift in different lizard shapes as you face killer lizard-mutants to save the world!