No matter what, I don't understand how the hell does blitzball works in FFX-2. It's different from FFX, it doesn't even look like you can control the characters (or if you can, then I have no idea how). Thank god it is 100% opticional and not at all necessary for you to reach a 100% complete game.

All others are doable. Reptile run is also completely opticional, like all other minigames from Calm Lands (my favorite is the slots), but eh. Gunner Gauntlet is actually pretty easy once you get the hang of it, same for Sphere Break (though the latter does change depending on luck and circumstances). The cactuar shooting is also doable, I really like it because it's a timed thing (I like that sort of stuff. No surprise I like slots).

Others.... there's the lightning towers, but you only get something from completing 5 of them, you get nothing from completing all 10 (I know because I have completed all 10), but they're all kinda easy though. The hardest for me are Paine's.

I hope all minigame is optional doesn't require completion 😑😑,sphere break got me but other minigame useful reward garment grid and other