Summary of Access Glitch Worlds in Super Mario Bros. via NES Tennis

00:00:00 - 00:10:00

The YouTube video explains how to access glitch worlds in Super Mario Bros. via NES Tennis. By resetting the console, you can start at any world number. If you are quick enough, you can pull out the games and put them back in without turning off the console.

• 00:00:00 The video demonstrates how to access glitch worlds in Super Mario Bros. via NES Tennis. By resetting the console, you can start at any world number. If you are quick enough, you can pull out the games and put them back in without turning off the console.
• 00:05:00 The video explains how to access glitch worlds in Super Mario Bros. via NES Tennis. The first 6 bytes correspond to the 6 digits of the top score displayed on the title screen. The score can actually be 7 digits, but the last digit is always a 0, so it doesn't need to be kept track of. The next set of 6 bytes are the 6 digits of Mario's current score. The next set of 6 are Luigi's current score. The next set of 6 are Mario's coin count. While only the last two digits are displayed, the other 4 are there, just hidden. Same for the next 6 bytes, which are Luigi's coin count. The next set of 6 bytes are the number of seconds left on the timer, of which only the last 3 are shown. This leaves 5 bytes. These two bytes are actually unused. This byte is used as a flag to determine whether or not you can use the B button to cycle through the worlds on the title screen. This is a normal functionality that is enabled after beating the game. The next byte is the starting world number byte. This is what world you start on if you hold A while pressing start on the title screen, minus 1. This last byte though is the special byte. When
• 00:10:00 In this video, we explore how the game "Super Mario Bros." stores levels in its ROM. Levels are stored as a series of "worlds," each of which is 8 levels long. To start at level 9-1, we need to swap over to the tennis game and use the A button to start at level 6-2.