Hey fellow Final Fantasy X explorer! When it comes to sphere grid progression, make sure to focus on each character’s strengths. For example, Tidus is great for speed and agility, while Auron excels in strength and defense. Don’t be afraid to mix and match different paths to create unique character builds.

As for side quests, don’t miss out on the Monster Arena challenges for some great rewards and tough battles. The Celestial Weapons quests are also worth the effort for powerful gear. And if you’re looking for a challenge, try completing the optional Dark Aeons and Penance boss battles.

Lastly, experiment with different character builds to find what works best for your playstyle. Whether you prefer a balanced party or a more specialized approach, there are plenty of options to customize your team. Happy exploring!