Many game magazines have honored Halo as one of the best and most critical games ever. The game's popularity has led straight to labels such as "Halo clone" and "Halo killer", applied respectively to games either like or anticipated to be better than it. In addition, the game impressed and was employed in the fan-created Red vs. Blue video series, which is credited as the "first massive success" of machinimathe technique of using realtime 3D engines, frequently from video games, to form animated films.