A Brickfilm is a film made using Lego bricks, or other similar plastic construction toys. They are usually created with stop motion animation, though computer-generated imagery (CGI), traditional animation, and live action films featuring plastic construction toys (or representations of them) are also usually sometimes considered brickfilms. The term 'brick film' was coined by Jason Rowoldt, founder of Brickfilms.com.
Multi started creating Brickfilms on YouTube in 2010, but actually started even before YouTube. There are over 130 Brickfilms on the channel.