Kirby: Nightmare in Dream Land

About

Your own cartridge, the one the knidl decompilation rebuilds byte for byte, on mGBA compiled to WebAssembly, with save states.

Kirby's Adventure is a 1993 platform game developed by HAL Laboratory and published by Nintendo for the Nintendo Entertainment System (NES). It is the second game in the Kirby series after Kirby's Dream Land (1992) on the Game Boy and the first to include the Copy Ability, which allows the main character Kirby to gain new powers by eating certain enemies. The game centers around Kirby traveling across Dream Land to repair the Star Rod after King Dedede breaks it apart and gives the pieces to his minions.

Description from Wikipedia, CC BY-SA 4.0.

How it runs

Project

knidlDecompilation. The original binary turned back into source code, function by function.By Jonathan Toledo

Port

andrewnakas.github.ioBy Andrew Nakas · WebAssembly, on the mGBA emulatorOnline since Oct 5, 2026Source: andrewnakas/knidl-web

Player

mGBA 2.5.1By Jeffrey Pfau (endrift) and contributors, built for the web by Nicholas VanCise (thenick775) · MPL-2.0Play opens it on this site. The port above is under Other ways to play.

Controls

Arrows move. X is A, Z is B, A is L, S is R, Enter is Start, Backspace is Select. Hold F to fast forward, R to rewind. On a touch screen, the buttons show on the screen.

Plays with

Keyboard and touch. Saves in your browser, with the moment you left.

You need

Your ROM: Kirby: Nightmare in Dream Land (USA), .gba, 8 MiB. You pick the file in the player, which keeps it in your browser.

Original

HAL Laboratory, 2002, Game Boy Advance