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SNES OffsetTypeGameLengthDescription
$70:0010MiscellaneousSuper Mario Bros. 110 bytesSave data of Super Mario Bros. 1 - File A
$70:00101 bytesWorld completion
$70:00111 bytesLevel completion (inaccessible via file menu)
$70:00131 bytesExtra lives of Player 1
$7E:00141 bytesExtra lives of Player 2
$70:00151 bytesHard mode flag
$70:00161 bytesNumber of players.
$00 = 1 player game
$01 = 2 player game