This patch adds a world select menu when starting SMB1.
Usage:
- Press select to switch between lines
- Press Left or Right to change values by 1, Up or Down to change by 16
- Press Start to start the game!
- Press A+Start to play in hard more, B+Start to play with two players.
A couple of things to be aware of:
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The selectors are 0-based, so if you pick world 0, area 0, you will get what's normally 1-1 (the title screen will show 1-1.) This was done to make it easier to remember level numbers rather than having to remember that you were on "right side of a cloud - copyright sign"
-
The 'area' selector picks areas not levels. If you play a stage where there's a pipe entry cutscene, it is it's own separate area. This way you can access every single area but the numbering can be a little off.
First, download the latest patch from the releases
Then apply that IPS (using for instance Lunar IPS or http://rainwarrior.ca/projects/nes/ips.html) to the original, unmodified version of the Super Mario Bros. (US/World) ROM.
The MD5 checksum for the ROM you should be using is 811b027eaf99c2def7b933c5208636de.
Have fun!
/threecreepio
Some of the glitched levels behave kind of strange, and you might need game genie codes to get a good look at them. Here are some useful ones:
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YZNLLYTX- Disables the "TIME UP" message, so your game timer can't expire. -
AANLIAAL- Allows control of Mario when he's stuck at the top of the level. -
AISSONOX- Allows moving through walls -
EYSPAPEI- Turn ground levels into water levels, and water levels into ground levels. -
NYNPKGYE- Disable automatic right movement (this will break actual cutscene levels)