...either you havent seen my last 2 posts or you want me to give you a unfinished version of the game that is boring and has nothing to do in it...before you make a comment like this read my last 2 posts and the comments in them...
Is this is like garry's mod but 2D? If so you should make a setting which switches to raycaster 3D. Just another suggestion, If you make a map creator and allow people to modify the game, THAT COULD BE FUN! If you need help with multiplayer I could help!