Portal 2

In Portal 2, the sequel to the critically acclaimed Portal, Chell must once again outsmart the sinister AI GLaDOS as she's joined by a new robot companion, Wheatley. Together, they face increasingly complex puzzles designed by GLaDOS to test the Portal Gun's capabilities and exact revenge on Chell for her previous escape from Aperture Science Labs. Chell's determination to break free from the lab reignites as she uncovers the truth behind her confinement and the dark secrets of the Aperture Science Labs.