FOLLOW THE INSTRUCTIONS CAREFULLY: Okay, this is a bit long: - Copy the "Cloud Player" object and put it in your game that you want to convert online. - Then, you will see that there is a loose code. That one, put it in your player's main loop. - Add all the things you see necessary (position in x, position in y, disguise, direction, etc.) in the "My values to send" list. It is also very important to copy all player costumes to the "Cloud Player" object. - Lastly, remember that this only creates clones of online players, so it works fine in platform games but, for example, in "Geometry Dash" it wouldn't make much sense.
Thanks to @griffpatch for his tutorials in YouTube @multiplayer @online @engine