Changes

Game engine recreations (sometimes called game engine re-implementations or remakes) are unofficial recreations of game engines. Allowing you to play games on different systems to which they where originally createdintended. This requires you to have the original game assets (ROMs or other files) and load them in the game engine recreation. Game engine recreations are mostly done thru reverse engineering the original game engines. Game engines which are unofficial recreated when the original source code is available are mostly called source ports(for example GZDoom which allows you to play Doom, Doom II and Final Doom on modern systems). If its done by the original company a game engine is ported officially it's simply called portsport, remakes remake or remastersremaster.