Partly in response to a petition for the release of an HD version of the original TimeSplitters trilogy, a group of fans were given permission by Crytek to develop a TimeSplitters mod using CryEngine 3. Project lead Michael Hubicka stated that while TimeSplitters 4 was their ultimate goal, they first had to convince Crytek that there was "sufficient demand for the series through [an] HD Collection." The game (titled TimeSplitters Rewind) would combine "greatest hits" elements from across the series, and that although the engine would give the game a modern look they "didn't plan on fixing something that isn't broken.", featuring both story and multiplayer modes and being free of charge on PC. Additionally, there were originally plans to develop the game in Unreal Engine 4, but these were dropped due to concerns that the Unreal version would be unable to use the TimeSplitters IP and would "likely have to rebrand".