Hey fellow Final Fantasy X explorer! When it comes to sphere grid progression, don’t be afraid to mix things up. Experiment with different paths for your characters to unlock new abilities and stats. For side quests, make sure to complete the Monster Arena challenges for some great rewards and tough battles. As for character builds, focus on maximizing each character’s strengths. For example, Tidus is great for agility and speed, while Lulu excels in magic. Most importantly, have fun exploring Spira and taking on all the challenges it has to offer!