Joozey, you are right concerning the map and we are going to ask the creator concerning the copyright. However to give an answer to your questions about the SG copyright : We are NOT going to SELL our game, it is only a free game for fans made by fans. Moreover concerning the copyright : if we take into account what fastlane69 said any modification for games such as : Half-Life (1 or 2) or Doom 3 .... would be prohibitten , isn't it ?? So, in this situation it appears that we have the right to do it. What it is very important, is what are we going to do with our game. The fact is , if we want to take benefit from our game we MUST buy the copyright ,but we are not in this case.