Hey fellow Final Fantasy X explorer! When it comes to sphere grid progression, don’t be afraid to mix things up and experiment with different paths for your characters. It’s good to focus on their strengths but also dabble in other areas to make them more versatile in battle.

For side quests, make sure to complete the Monster Arena challenges for some awesome rewards and tough battles. Also, don’t forget about the Celestial Weapons and the ultimate aeons – they are a must for taking on the toughest bosses in the game.

As for character builds, think about each character’s unique abilities and strengths. For example, Tidus is great for speed and agility, so focus on those areas for him. Lulu, on the other hand, excels in magic, so beef up her magic stats to unleash powerful spells.

Happy exploring and may the power of the aeons be with you!