"Uncover the mysteries of the Delta sector in this epic 2D vertical space shooter! With over 20 pulse-pounding missions, 5 unique boss battles, configurable ship upgrades and dynam.. "
Portal 2 draws from the award-winning formula of innovative gameplay, story, and music that earned the original Portal over 70 industry accolades and created a cult following.
The single-player portion of Portal 2 introduces a cast of dynamic new characters, a host of fresh puzzle elements, and a much larger set of devious test chambers.