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The game was originally called G Sonic in Japan.
Contributed by Ophl
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Because of the Master System's popularity in Brazil, Sonic Blast actually got a Brazil-exclusive Master System release. The port was untouched from its worldwide Game Gear release. It suffered from inferior graphics (the Game Gear has a wider color palette), gaps were left on the sides of the screen, the HUD wasn't placed properly, and because of its large 8Mbit (1MB) cartridge, the game won't even work on earlier hardware.
Contributed by SonicManEXE