Acosix said:

C libraries are old but useful for 2D games.

True. Much of the C libraries have been matured, even perfected, so no need to “reinvent the wheel”.  Many people discover that a lot of frameworks, engines, middleware, and tools have a lot of C at least embedded in the source. Some are …

Networking is not online-multiplayer as it highly depends on how your wrote the server and I don't believe that that Epic is giving you the desired server and remote gameplay for free

What I said was that, if you use player hosting, Epic Game Services will host the matchmaking and other game service…