ROM Hack - SMB3 - Bonus Game Fixes

SMB3 - Bonus Game Fixes

Original game : Super Mario Bros. 3

Platform : NES

Author : TakuikaNinja

Release date : 12 October 2023

Category : Improvement

Patch version : 1.0

Modifications : P

Downloads : 267

ROM Information

Database match: Super Mario Bros. 3 (USA) (Rev 1)
Database: No-Intro: Nintendo Entertainment System (v. 20210216-231042)
File SHA-1: A25D2DCBF6EC3634A84318BFE2CFE28D5331D815
File CRC32: E8C3AF69
ROM SHA-1: BB894D104C796F69BA16587EB66C0275F5C2FC02
ROM CRC32: 2E6301ED

Hack description

The bonus games in Super Mario Bros. 3 have some quirks which impact their difficulty. This hack remedies these:

The Roulette (AKA Slots or Sliding Images) game is heavily rigged by psuedo-random number generation. This hack removes all reliance on psuedo-random numbers to make it easier to win.

The Card Matching game only generates 8 unique board layouts due to flaws in its shuffling algorithm. This hack overhauls the algorithm to a variant of Fisher-Yates/Durstenfeld. As a result, the game is much harder to complete in a single encounter as the board layouts are more random. (Remember, the progress of an unfinished board is saved across encounters)

Please watch this excellent explanation video by Retro Game Mechanics Explained for more information (See video below).

This hack is compatible with the Sound Effect Fix.

Contributions

Contributor	Type of contribution	Description
TakuikaNinja	Hacking	Bonus game fixes
Drakim	Original Work	asm6 disassembly port
Southbird	Original Work	Original disassembly

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