This is a punishingly difficult hack of Super Mario World. Most people only know about the first Kaizo Mario, but there are three Kaizo Mario games total. This listing is for all three games.
Speedrunners: these carts were play-tested by Lambby, and are confirmed to perform properly on console.
No manual is included, but everything else is in excellent condition! You have the option to purchase cartridge only, or with a universal game case with insert (each of the three carts comes in its own case).
Kaizo Mario 2 tool-assisted speedrun on emulator:
Kaizo Mario 3 tool assisted speedrun on emulator: