Super Mario Bros. 3 is an action platformer game for the Nintendo Entertainment System.

The bonus games in Super Mario Bros. 3 have some quirks which impact their difficulty. This hack remedies these:
[list]
[li]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.[/li]
[li]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)[/li]
[/list]

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.

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

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