Hey fellow Final Fantasy X explorer! When it comes to sphere grid progression, I recommend focusing on each character’s strengths to maximize their potential. 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 Aeons. They can be a game-changer in tough battles. Also, be sure to complete the Monster Arena challenges for some great rewards.

When it comes to character builds, versatility is key. Experiment with different paths on the sphere grid to create well-rounded characters. Mixing magic and physical attacks can give you an edge in various situations. Good luck on your journey through Spira!