I was talking with my friend and he said it was possible to make and online game made with blender and you can code it in python. Can you?
Go make a simple game first, learn python. then come back and try online. It is very difficult to make an online game, and it requires lots of python.
It is possible and it has been done. There are templates about, but each game requires specific server/client software for good performance. If you know how to code and optimize a server and a client then it’s not a problem. If not then you need to learn a lot first.
You might want to read the sticky’ed thread :