You couldn't pay me to write a game in C today. Our expectations of what games have to be are sky high today. You cant get away with the productivity lost writing in c, maybe c++ since its supported by a number of engines. But, im personally not aware of a single engine that uses C. I tried my hand at writing a game without an engine, and it was a hot mess. Writing low level code to make a button with text, no thanks...been there done that, in my game, you could bump into trees and get stuck...not very fun in my opinion, and thats after a few months of writing code.