Very cool, and an original take on the theme. If I had any criticism, I think the pacing might be a little off. Most of the games are quite short and fast paced, but it felt like I was spending much longer on the pong and the "don't touch the sides" maze levels. I also found it a bit too repetitive by time I reached 50+, but that's fair enough for a jam game! Visually, it's excellent, and the audio is good too. Great job.
(Edit: Actually, looking at your screenshots, I think I had a small bug. In the 'turn over the correct pair of cards' game, the cards had no back, they just disappeared when flipped over. This made it a little harder to tell where the cards were supposed to be, but it was still playable)