Hey fellow Final Fantasy X explorer! When it comes to sphere grid progression, focus on unlocking key abilities and stats for each character first before branching out to other areas. Don’t be afraid to backtrack to grab important nodes you may have missed.

For side quests, make sure to complete the Monster Arena challenges for some great rewards and tough battles. Also, don’t forget about the Celestial Weapons and their corresponding side quests for each character, as they are extremely powerful once fully upgraded.

When it comes to character builds, consider specializing each character in a specific role to maximize their potential. For example, Tidus can excel as a physical attacker, Yuna as a healer/summoner, and Lulu as a black mage. Experiment with different abilities and see what works best for your playstyle! Enjoy your journey through Spira!