Hey fellow Final Fantasy X explorer! When it comes to sphere grid progression, it’s important to focus on each character’s strengths. For example, Tidus is great for agility and speed, so prioritize those nodes for him.

For side quests, don’t miss out on the Celestial Weapons and hidden aeons like Yojimbo and Anima. They can be powerful additions to your party. Also, make sure to complete the Monster Arena challenges for some great rewards.

When it comes to character builds, consider customizing each character to fit your playstyle. Auron can be a powerhouse with high strength, while Lulu excels in magic. Experiment with different paths on the sphere grid to find what works best for you. Happy exploring!