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 agility and speed, so prioritize those nodes for him. Don’t be afraid to mix and match different paths on the grid to create unique character builds.

As for side quests, definitely don’t miss out on the Celestial Weapons quests for your party members. They can be challenging but are worth it for the powerful weapons you’ll receive. Also, make sure to complete the monster arena challenges for some great rewards and to unlock stronger enemies for grinding.

When it comes to character builds, consider branching out and experimenting with different abilities for each character. Mixing magic and physical attacks can create versatile party members. And don’t forget to customize your sphere grid with stat-boosting spheres to make your characters even more powerful. Happy exploring!