Which programms can create the games?

Answer 1

Computer - C#
Android - Java,Kotlin,C++
IOS - Swift, Objective-C

Engines:
Unity(C#)
Unreal(C++)

Answer 2

Games on what platform?

Answer 3

Technically you could make a game with any programming language. Unity(C#) and Unreal(C++) have been the most popular engines recently, and they allow you to build for multiple platforms.