Install the games on the new console as you did with the old one. You can use Checkpoint to restore your savegames on the new console if you want to.
And even though if you could do a "system transfer", you'd have to install the games again on the previous console. There is no point.
I know the Apple 'it just works' stuff is all marketing bollocks but I have to admit, it's hard to ignore when you used a Mac for your job for 4 years with zero crashes and your own laptop starts up with a BSOD like 15% of the time