Put aside Dead Island, stop playing Mirrors Edge and take some motion sickness pills as Evan Todd has announced that Lemma; an immersive first-person parkour game is due for release on Steam May 12th. Five years in the making and unlike any first person parkour game you've played, Lemma features the ability to create structures through parkour moves. Surfaces pop in and out of existence at will and you can modify the environment in Lemma through several different systems that work together.