Is c# can use to build a game

Answer 1

So yes, C# is good for game development - because you can use it in Unity. Microsoft's XNA framework (Microsoft XNA Game Studio 4.0) was a great way to get into independent game development, and that was driven by C#. ... The script/code for Unity games can be written in javascript or C#.

Answer 2

https://www.sololearn.com/discuss/708962/?ref=app
https://www.sololearn.com/discuss/1353593/?ref=app
https://www.sololearn.com/discuss/708938/?ref=app

Answer 3

Of course, you can develop game with c# using libraries:
XNA
FNA(Terraria coded with fna and c#)
Monogame
OpenTK
SFML
TaoFramework
SharpGL

Or you can use engines:
Unity
Godot