The final stage of the Liar Game only had a single game. But, it is this lone game that people refuse to take risks with.
I enjoyed the Garden of Eden a lot. The tricks were more intricate and I failed to see through many of them, just like the second season. But, Nao-chan had an incredible character growth compared to the first season. She is much more braver and less 'stupid' than before. Akiyama never really changes. (Which is a good thing.)
Though I liked the game, I understood why it was made as a separate one without combining with the episodes. But, I missed seeing more intense games like the first two seasons. Overall, it's an almost perfect wrap up to the Liar Game. I will surely miss every player's antics.