I'm a long time youtube viewer and recent player of the KSP game. So far I've had a mixed enjoyment and fusteration of the game but overall I've really enjoyed it. I also visit an IRC fan chatroom by the name we6jbo-ircforge and I've heard through the chatroom that there are plans to add multiplay to the game. I'd like to shed my own opinion on multiplayer in games that have sandbox elements. When Minecraft added multiplayer support to the game I tried it once and never again. To me, adding multiplayer to a game takes away ownership of all my creations and hands it to the server owner. When I leave the server, all my creations and my own stuff is instantly wiped from me. Even a game like Terraria where you keep your equipment has the same problem. Nothing can be built without it being given away. It's my opinion that games like Minecraft, Terraria and maybe even KSP needs to adopt a ownership system. I'm not sure exactly how an ownership system could be implemented into a game but I have always liked Spore for being able to send multiple copies of the creations people built to the different worlds. In that regard, the content creator still retains their work and only a copy is made available to everyone else.