Gandalf meets GLaDOS, and he's hungry for cake.

Continuing in its tireless mission to Lego all the things, Traveller's Tales has been hard at work on its most ambitious title yet, Lego Dimensions. The game follows in the footsteps of Skylanders and Disney Infinity, allowing players to use physical figures to swap characters in and out of play. The Lego Toy Pad has a few more tricks up its sleeve as well, as this E3 trailer shows.

Lego Dimensions will be released across PS3, PS4, Wii U, 360 and Xbox One, and it's set to hit shelves September 27 in the US, with a European release following two days later.

LEGO Dimensions: E3 Portal Trailer - The LEGO Toy Pad Does More Watch on YouTube