31-in-1

31-in-1
Developer: Supervision Platform: Unlicensed NES This game has unused graphics. This game has unused text.

31-in-1 is an unlicensed multicart for the NES. It is a common one in North America.

Unused Graphics

There is Chinese text that reads "Xu Xinqi". Must be one of the developers.

Unused Text

Starting at offset 0x81B39 in the ROM is several unused text strings referencing various games, including several which aren't on the cartridge.

PIECES CHESS

MAH JONG

PIN BALL

POPEYE

ZINJA

MAPPY

POOYAN

URBAN CHAMPION

Immediately after this is likely code created for an early version of the menu, with only the first two games referred to by name. (the first line was likely never meant to be displayed anywhere)

SUPER KIDS
SUPER KIDS
MARIO BROTHER
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