The baseline for "best" is having every single character slot filled. This includes:
The standard game requires you to scan QR codes or trade via local wireless to get players like or the Chrono Storm members. The best save data bypasses this. You will find all 200+ characters unlocked, including: inazuma eleven strikers 2012 xtreme save data best
for unlocking the "GO" characters like Adult Endou or Fubuki? Unlocking Characters - Inazuma Eleven Strikers 2012 Xtreme The baseline for "best" is having every single