It's difficult to measure game engine usage for AAA games since they can afford to a) build their own internal engine b) pay licensing fees to not disclose wh

It's difficult to measure game engine usage for AAA games since they can afford to a) build their own internal engine b) pay licensing fees to not disclose what engine they're using. For overall game usage, however, I'd definitely say Unity is most used, with UE4 coming in second