Test Subject Green

[WASD] or [arrow] keys are used to steer Blue around and jump, while the [spacebar] fires Blue's blaster. The blaster is handy for self-defense but is fairly slow to fire, so it's often easier for Blue to just avoid enemies. The goal in each level is to grab a key and head to the exit. Naturally this is harder than it sounds. The most common obstacles that complicates your task are green portals that follow an odd sort of physical logic; entering through the bottom of one will pop you out of the top of another, for instance, and vice-versa. Likewise, entering through the left of one will lead to the right of another. Figuring out how these portals work is crucial to success.