Decompilation projects have been getting seriously impressive as of late, and hot on the heels of Super Smash Bros. Melee reaching 100%, another brilliant game has now joined the club.
This time itโs Kingdom Hearts: Chain of Memories for the Game Boy Advance, and perhaps even more impressive is just how quickly the whole thing has come together.
Chain of Memories decompilation hits 100%
The project comes from developer Pheenoh, who revealed that the Kingdom Hearts GBA adventure has now been fully decompiled.
If youโre new to the whole decomp thing, this means its compiled code has effectively been reconstructed into readable source code that can reproduce the original game, opening up a crazy amount of possibilities.
The projectโs GitHub repository was only created on August 31, 2026, with Pheenoh publicly announcing just days later that they had started another decompilation project โfor funโ. Progress then shot from around 30% to 50%, 69%, and eventually 80% within little more than a week, with Pheenoh also stating that they were aiming to finish the project solo.
That makes the jump to full completion in roughly two weeks from the repository being created, which is pretty wild when you consider the amount of work usually involved in matching a gameโs original compiled code.
For the vast majority of these projects, you see them going on for years until big breakthroughs happen, so the fact that this was all boxed off in less than a month is mind-blowing, really.
This Chain of Memories decomp currently targets US, Japanese, and European versions, with all three builds having been successfully built from source during development. The repository itself doesnโt contain any ROMs or copyrighted game assets, though, so youโll still need a โlegally dumpedโ copy of the original game to build it.
As always, 100% decompilation doesnโt mean any native PC ports will be up and ready in an instant. What it does provide, though, is a considerably better foundation for everything from mods, reverse-engineering, and preservation projects to be worked on moving forward.
At the rate these decomps are being finished in 2026, we could be seeing a new title getting wrapped up every week, and Iโm certainly not complaining about that.
