We already knew LEGO Dimensions would include Valve's popular puzzle game Portal in its mashup world, but this new trailer from Warner Bros. and TT Games demonstrates just how fully it will be integrated.

In the video, which debuted at E3, Portal's primary antagonist GLaDOS puts Batman, Gandalf and Wyldstyle through a series of tests that can only be solved using the LEGO Dimensions Toy Pad (it's what allows players to introduce characters, vehicles and devices into the toy-to-life game). The footage also depicts Homer Simpson, who doesn't fare so well, and Portal's protagonist Chell.

Launching Sept. 27 for Xbox 360, Xbox One, PlayStation 3, PlayStation 4 and Wii U, LEGO Dimensions will include gameplay from DC Comics, The Simpsons, Doctor Who, Jurassic World, Scooby-Doo, Ghostbusters, Back to the Future, The Lord of the Rings, The LEGO Movie and more.