Mark wasn't trying to be mean, and he did mention that “revoke your gamedev abilities” is only a joke. Just know, he enjoyed the game a lot and I find it fascinating as well. All he was doing is helping you improve your game and finding mistakes.
I know he was joking, but he had a valid point. I just can't help but be dissapointed about the fact that he was not satysfied with the game.
but he was joking
