Not Only 30 Programs for the Sinclair ZX81

Try the programs out in your browser by clicking on a name below.
Or download a zip of all the P files to try in an emulator or on a real 1K ZX81.

Xci Super Mario 3d World Bowsers Fury 010028 Extra Quality [work] Jun 2026

Super Mario 3D World + Bowser's Fury (Title ID: 010028600EBDA000

Local and online co-op for up to four players. 2. Bowser’s Fury (The "Extra" Content)

Move the verified XCI file from your microSD card to an external hard drive for safekeeping. File Verification and Safety

Community creators build custom modifications that swap out original game assets for higher-quality versions. xci super mario 3d world bowsers fury 010028 extra quality

It is a verified, uncorrupted dump directly from a physical cartridge, ensuring maximum compatibility with custom firmware (CFW) setups.

To understand these search queries, it helps to break down the individual components:

: A completely new standalone adventure set in the open-world Lake Lapcat Super Mario 3D World + Bowser's Fury (Title

To understand why this specific phrase pops up in search engines, it helps to decode the individual components of the string:

Base games, updates, and DLC must be kept as separate files, meaning you have to manually install updates inside the emulator interface.

: An enhanced port of the Wii U classic that supports up to four players in local or online co-op. It features creative level design where each stage introduces and discards unique gameplay gimmicks. Bowser's Fury File Verification and Safety Community creators build custom

Title IDs change slightly depending on whether the game cartridge is from North America, Europe, or Japan.

When backing up a cartridge you own, achieving an "extra quality" or 1:1 clean dump ensures long-term data preservation and stability. Necessary Tools A Nintendo Switch capable of running custom firmware (CFW). A specialized dumping utility such as NXDumpTool. A high-capacity microSD card formatted to exFAT or FAT32. Step-by-Step Backup Process

Note that there is no DRAUGHTS program since I couldn't get it to work.

This website was created by Tom White (source on GitHub).
The emulator is subject to the GPL license, version 2.
The programs are copyright (c) 1981 by Beam Software.