Alter Echo is an action-adventure video game for PlayStation 2 where players assume the role of Nevin, a character capable of manipulating a unique organic substance known as Plast. After discovering that human consciousness has contaminated Plast through illegal experiments, Nevin must confront hostile biomachines. The game features a morphing combat system and a Time Dilation mechanic that enables players to execute complex attacks.
In Alter Echo, interstellar corporations mine a new organic skin called Plast and use it to make biomachines. Nevin, who can physically alter Plast and time itself, discovers that illegal experiments have infected Plast with human consciousness, and now he must fight for survival against a world gone mad. As you battle wave after wave of biomechanical enemies, you can morph between Melee, Gun, and Stealth modes. A Time Dilation system allows players to freeze the action and cue up an unstoppable flurry of moves and special attacks.