Just 9MB to run in webgl browser. You are welcome in game to comment, name your device that has the perfomance to run this well for 2 players, - compatibility or not i guess on 8 core androids schuld run well, so enable gpu flags, sorry that some old devices cant or are in power saving mode? Extensions was made that, you can play in fast device 2 players on keyboard and tablet, share one controller, all this needs perfomance by input system of unity 3d webgl. Now you can Challange your 2. Player.