I loaded up an old save that was basically at the bottom Mt. Gagazeth and now I'm testing my memory about all the stuff I used to know about 10 years ago. I'm trying to do as many sidequests as I can without using a guide. So far I've obtained all aeons, Yuna's and Tidus' ultimate weapons (fully upgraded) and Rikku's is half upgraded. I got stuck on how to win the Chocobo Race at Remiem Temple with opening 5 chests, and I had to look up where Wakka's Crest/Sigil were. Everything else is running pretty smooth.

It's pretty fun. It's a good game.