This was an interesting challenge for the Dimensions crew – create a Lego game version of a celebrated game IP from Valve. Portal has a loyal following worldwide so, needless to say, there was much scrutiny from the fans on how this would work.
In this sequence Chell substitutes the GLaDOS core with another – Spacey leading to a meltdown and disruption of the neurotoxin vent system. After investigation they find the Dimensions portal and escape – a game within a game.
The initial previs took three days.