Gaming All-Stars: The Ultimate Crossover (working title: Super Smash Bros. 4 (Reboot)) is a mega-crossover fan movie made by SuperSmashBrosGmod on YouTube. It is made mostly in Gmod and is about 4 hours in length. The movie seems to be based on The Subspace Emissary mode from Super Smash Bros. Brawl, as most of the concepts are there, including trophyfication.