Cooperative Survival fps game in BGE

I live in India and am a self learning blender user and am making an open world co-op exploration survival game, which i can play with my friends online. I looked up online for tutorials, but there weren’t many and those which were, did not help me much. I’m pretty new to Python as well, so i don’t understand code much. I wanna make it a 6-10 player co-op game. I have all characters, and environment models almost ready for integration, but I’m stuck here at doing the multiplayer thing. Hope you guys can help me out.