Probably only banning foreign games. I'm sure you'll still be able to play games from Chinese government supported studios.
Of course the games will only say good things about China's leaders and political philosophy.
You'll have to register any online identity with your real name and address. Anonymity is a non-starter; they have to know who needs to be forcibly disappeared if you say the wrong thing online.
And they'll probably also hope a couple games get popular, or at least occasionally used, outside China. Because they'll include backdoor code to get root access to the computer running it.