I seem to be in the minority here, but i fervently believe that this was an improvement compared to the last season.
Season one was entertaining enough and the concept was really good but I felt as though it didn't quite tap into its potential (The games were not that interesting and not that many and there was a pacing issue imo).
Season two was packed with very dynamic action and fight scenes and a plethora of very fun games that had me at the edge of my seat. Its been a while since I had so much fun watching a show/drama!
I also liked the characters much more this time around, they had more time to develop and they all grew on me ( with certain exceptions).
I wish some scenes were handled a bit differently but overall it was such a great watch, I'm already considering re-watching


SPOILERS!
The ending was a bit unsatisfying, in that they didn't remember anything but the last shot of the card makes me hope for a 3rd season! Go watch ittt