It would be awesome if I can make it multiplayer, but I currently have no idea if it is possible or not (because of the AI performances since each single citizen will have its own AI). And the size of the servers will also depend on that. If a lot of people request modding and think it can really add something important in the game, I'll do my best do add a modding system (but I've never developed that so I'll need to learn ^^). Good idea for the flag! I'll first focus on the computer version of the game and on the computer community but there might be a XBOX or (and) PS4 version (honnestly I have no idea yet)! :)