Video games are increasingly a content creation tool as well as a pastime, proving the impact of machinima is everywhere.

Red vs. Blue is officially over. On Tuesday, Warner Bros. Discovery released Red vs. Blue: Restoration, the final installment in the long-running saga that was once at the forefront of a whole new form of entertainment: web videos created from in-game footage. Machinima signaled a new world where that footage—of Halo, in Red vs. Blue’s case—could power viral clips. That was 2003. Now it seems as if Restoration might be machinima’s swan song.

“Machinima directors use game engines, which allow them to record a scene from any conceivable angle, like a Hollywood director uses a cinematographer,” WIRED wrote in a 2002 piece heralding the potential of this new filmmaking technique. When it launched a year later, Red vs. Blue exemplified those possibilities. The series was created by linking several Xboxes together and recording footage of ...