Runemaster was a planned role-playing video game developed by Paradox Development Studio. Formerly known as Project Nero, the game-story was to be based on Norse mythology, and the game was set to feature procedurally generated content. The Clausewitz Engine was planned to be used in the game, the first time it had been used for anything except a strategy game. The game was set to include six of the nine worlds of Norse Mythology: Midgård, Jotunheim, Muspelheim, Helheim, Alfheim & Svartalfheim. On 4 December 2014, Paradox Interactive announced that development of the game had been suspended.