Hello! I'm working on creating a sci-fi setting for a tactical space combat video game and short story series, and I had a few questions I couldn't find much info on after googling. I'll be playing a little bit loosely with the laws of physics for the sake of gameplay and storytelling, but I also want to avoid blatant violations as much as possible. For gameplay purposes, I want to have the possibility of battles that take place within visual range, at relatively slow velocities, something closer to what you see in most sci-fi movies or games than the near-lightspeed sniping matches that I've been told would be closer to reality. I admit I only have a high-school grasp of the physics involved, but could a low-density liquid or gas work for creating enough drag, light diffusion, etc. to make that kind of setup make sense? Essentially, Space is an Ocean / Space is Air, but without the constant downward gravity. The fluid would be contained within a huge but enclosed area. I apologize if this isn't the right kind of question for these forums, but I'm not sure where else to try asking.