Lego Dimensions is a Lego-themed action-adventure platform crossover video game developed by Traveller's Tales and published by Warner Bros. Interactive Entertainment, for the PlayStation 4, PlayStation 3, Xbox One, Xbox 360, and Wii U. It follows the toys-to-life format, in that the player has Lego figures and a toy pad that can be played within the game itself where it features characters and environments from over 30 different franchises. The Starter Pack, containing the game, the USB toy pad, and three minifigures, was released in September 2015, while additional level packs and characters were released over the following two years.

The TARDIS is a fictional hybrid of a time machine and spacecraft that appears in the British science fiction television series Doctor Who and its various spin-offs. While a TARDIS is capable of disguising itself, the exterior appearance of the Doctor's TARDIS typically mimics a police box, an obsolete type of telephone kiosk that was once commonly seen on streets in Britain in the 1950s. Paradoxically, its interior is shown as being much larger than its exterior, commonly described as being "bigger on the inside".