Hey there, fellow Final Fantasy X enthusiast! When it comes to sphere grid progression, my top tip is to focus on unlocking key abilities for each character first before branching out. This way, you can maximize their strengths and have a well-rounded team. Don’t be afraid to backtrack to previous nodes to grab important stat boosts or abilities.

For side quests, be sure to complete the Monster Arena challenges for some great rewards and the chance to capture powerful fiends. Also, don’t miss out on the celestial weapons and aeons quests for some epic battles and ultimate gear. And of course, the elusive Dark Aeons are a true test of your skills if you’re up for the challenge!

When it comes to character builds, experiment with different paths on the sphere grid to tailor your party members to your playstyle. Whether you prefer Tidus as a speedy attacker, Yuna as a versatile healer, or Auron as a powerhouse tank, there are endless possibilities to customize your team.

Happy exploring