Get a rare look at what might have been in this proof-of-concept demo, rendered as previs in Unreal Engine, for the film adaptation of comic-book series Mouse Guard, which was shut down by Disney just two weeks before production was set to begin. The video was posted yesterday by Wes Ball (The Maze Runner), who had been set to direct, along with a note crediting the teams at visualization studio Halon, led by Casey Pyke and Fox VFX Labs (formerly Technoprops), led by Glenn Derry.