While the original physical release is region-locked to PAL (EUR), "Region Free" CIA files are modified to run on any 3DS hardware regardless of its original region.
Switch instantly between Sonic (speed), Tails (flight/lasers), Knuckles (strength/burrowing), Sticks (guided boomerang), and Amy Rose , who returns with her signature Piko Piko Hammer to manipulate the terrain. Sonic Boom Fire & Ice 3DS (EUR) CIA (Region Free)
A local two-player mode where you race character-themed robots on specialized tracks. While the original physical release is region-locked to
Characters can swap between a fire aura (to melt ice blocks) and an ice aura (to freeze water into platforms). Sticks (guided boomerang)
Massive boss encounters utilize both 3DS screens simultaneously.