To me, Planet Coaster is like that. Microsoft acquired Minecraft for two point something billion dollars. I play Xbox 360 and Xbox 1, I have a full friends list on Xbox 360, and Minecraft is like the most played game currently on Xbox 360. In Minecraft, you get to play with lots of friends and people, be creative, and survive without being killed by monsters, and watch out for other players who may try to greif or steal or harm your pet wolfs or cats. I did get RCT3 off Steam earlier this year but asked for a refund as I needed the money for this game, and Steam gave me a refund. Planet Coaster has amazing graphics, great ideas, and fun AI. Even though it's single player, the game is so fun, and with the fun AI, you I guess you can say the AI are your friends. Otherwise since Alpha 3, Planet Coaster is integrated into Steam so you get to share and download other people's creations and your own creations.