Can you code games with C# on repl.it?
I don't mean console games, I mean can you code an actual 2D or 3D game in C#? Even if there is no game engine
Yes. C# uses Unity. That's a game engine. You can cool 3D games with it. I think on repl.it too.
maybe you can but you can't make them as good
You can use a 2d array and print it out in the console. It's a bit laggy could it would work. You won't get any mouse controls but you can use Console.ReadKey(); learn more here: https://docs.microsoft.com/en-us/dotnet/api/system.console.readkey?view=net-5.0
Yes! But the engine your looking for may not work on repl.it. (The graphics system is very odd to some engines and may need configuration.)