How to make unlimited players online?

Can I make unlimited players online?
I read the wiki, you offer either a p2p connection or an API with get\post requests. Can it be done on websockets? If not, how difficult would it be to make an own module, and is it even possible?
I am a programmer and know JS.
Or maybe there is some other way for the number of players measured in thousands. Making your own server on a node is not a problem.

If you come to our Discord, talk to Erigato, he should be able to give you all the answers you need regarding this specific topic.
If he’s not there, search “websocket” there, you’ll find some answers.

GDevelop has other networking options provided as community extensions, such as MQTT or a WebSockets client.