Sonic the Hedgehog (Sega Master System)

The Master System port of Sonic the Hedgehog scaled down the Genesis game and included the all-new Bridge, Jungle, and Sky Base (not to be confused with Sky Chase) Zones. Given the limitations, it wasn't too bad.

Ancient


Ancient handled the 8-bit ports of Sonic 1 and were evidently going to credit themselves on the title screen with the text "©SEGA/Ancient 1991". In the end, though, only Sega received credit.

Unused Music
An unused rendition of Marble Zone is present in the ROM at offset. This and the unused Batbrain graphics (present only in the Game Gear version) suggest that Marble Zone was intended to be included in the 8-bit ports of Sonic 1 but was cut due to time or space issues.

Developer Text
A copyright string starts at : Developed by (C) 1991 Ancient - S Hayashi.

Filler Text
A text string (with minor variations) used as filler in the ROM banks. '1991 (C)Ancient. (BANK0-4) SONIC THE HEDGEHOG Master System & Game Gear Version. '1991 (C)Ancient. (BANK8-11) SONIC THE HEDGEHOG Master System & Game Gear Version. '1991 (C)Ancient. (BANK12-15) SONIC THE HEDGEHOG Master System & Game Gear Version.