ROM Hack - SMB2 - Restore original Spiny behavior

SMB2 - Restore original Spiny behavior

Original game : Super Mario Bros. 2

Platform : FDS

Author : Koohiisan

Release date : 09 July 2015

Category : Bug Fix

Patch version : 1.0

Modifications : O

Downloads : 1040

ROM Information

Super Mario Bros. 2 (J) [b1] (GoodNES 3.14)
CRC32 077b1892
MD5 882bb4e73658d38483078fa227d58183
SHA-1 3b8c8998b4887d6dd676965943d69a320738ab9c
SHA-256 3200fa7325ff110e03518689245116707952aa8222bc283f94c4e774f4fcadbc

Hack description

This is an IPS patch intended to restore the original Spiny Egg behavior to this game, much the same as the patch existing for the NES version of Super Mario Bros.

This replaces the hex values found in the original FDS image of...

20 31 8F A0 02 95 58 C9 00 30 01 88

...with...

A0 02 95 58 C9 00 30 01 88 20 31 8F

...which re-enables the horizontal movement logic.

This has already been done for the NES predecessor, but there did not appear to be a patch for this game, so this was created. More info is on available with the original NES patch on tcrf.net or the comments in the disassembly of this game hosted here as well. Additionally, a basic writeup is available on the author's site.

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