They said they’d do it, and they did. Tabletop game publisher Free League has now released the game engine that powers most of their products for anyone to freely use. Named after Mutant: Year Zero, it doesn’t just drive that game but all of Free League’s most popular titles: Coriolis, Tales From the Loop, Forbidden Lands, ALIEN, Vaesen, Blade Runner RPG and others. The upcoming The Walking Dead Universe RPG will also use the Year Zero engine.