I'm still trying to get this to work (even for FlappyBird) - on Windows, I put FlappyBird pdx into PlaydateSDK/Disk/Games and the text shows the game is there, but still not sure where to see the card/etc. images, but it's no place I can find so far. I can't really explore to find out as I get into a 'you need to register' doom loop:
(and I can't register either, as described here):
So, I'm currently 0 for 2 (can't see any card/etc images, can't register the simulator).