A team of modders have stepped up with probably the biggest Grand Theft Auto V mod to date. They're bringing GTA IV's Liberty City into Grand Theft Auto V. The team known has OpenIV Team have already released the below teaser for the mod. It seems like it will implement Liberty City without removing Los Santos or Blaine County. https://www.youtube.com/watch?vZ4hZLmxOQDE You won't be able to play online whilst exploring through Liberty City. Consequently, Rockstar will ban players as a result of for doing so. There is no release date, but it seems like it won't be long before we're driving through Liberty City once again. Unfortunately, at this stage it'll probably only be playable on PC.