To understand the "Xtreme" version, we first need to look at its predecessor. Inazuma Eleven Strikers 2012 Xtreme is an expanded edition of the original Inazuma Eleven Strikers (released in 2011 for the Wii). The 2012 Xtreme version was a Japan-exclusive title that added:
Inazuma Eleven Strikers 2012 Xtreme is the definitive arcade soccer experience for fans of the hit anime series. While the game was originally a Japan-exclusive release for the Nintendo Wii, the dedicated fan community has made it accessible to global audiences through English patches and ISO modifications. i--- Inazuma Eleven Strikers 2012 Xtreme English Iso
Full navigation of the "Inazuma Caravan" mode without needing to know Japanese. To understand the "Xtreme" version, we first need
[Release] Inazuma Eleven Strikers 2012 Xtreme – English Patched ISO (Wii) To understand the "Xtreme" version