Super Mario Galaxy Decompilation Reaches 100% as Astrocore PC Port Begins Development

Super Mario Galaxy has reached a major fan-development milestone: the Nintendo Wii classic has reportedly been decompiled in full, and the team behind that effort has begun work on an unofficial native PC port called Astrocore. Members of the Luma's Workshop modding community shared footage of the project in motion and said they anticipate a release soon, although no launch date, system requirements, or feature-complete build has been announced.

The project is also drawing attention for a direct statement from its developers: Astrocore is described as being "100% coded by humans." That wording arrives amid growing unease across fan development, emulation, and game preservation communities over code contributions produced with generative AI tools. For this team, the message is a clear attempt to establish how the work was created as the project moves from a completed decompilation into a playable PC conversion.

For players, the headline is straightforward. If Astrocore reaches a public release, it could offer a way to run Super Mario Galaxy natively on PC rather than through conventional Wii emulation. Native ports can potentially make it easier to support modern display resolutions, different control methods, performance options, and other quality-of-life enhancements. However, the exact capabilities of Astrocore have not yet been outlined, and the existing footage should not be treated as a final feature list.

What a complete decompilation means

Decompilation is not the same thing as simply copying a game's original source code. In broad terms, a decompilation project works to reconstruct understandable, buildable code from a released game's compiled program. It is painstaking technical work, often requiring contributors to identify behavior at a low level and repeatedly test whether reconstructed functions match the software's original output.

For useful background on this topic, read Grand Theft Auto's Radio Legacy Turns Every Drive Into a Music Discovery Engine.

For a game as technically distinctive as Super Mario Galaxy, that is an especially notable achievement. Released for Wii, the game is built around small spherical worlds, shifting gravity, motion-driven interactions, elaborate camera behavior, and levels that constantly play with perspective. Its systems have long made it one of the most admired 3D platformers in Nintendo's catalogue, but those same systems also present a complicated target for anyone attempting to recreate the game's underlying code behavior accurately.

Luma's Workshop initially indicated that the decompilation was nearly finished, then confirmed in a follow-up update that it had crossed the 100% threshold roughly six hours later. The group subsequently revealed Astrocore as the next stage of the work. The name appears to distinguish the PC-focused project from the decompilation itself, signaling a transition from reverse-engineering preservation work into a version intended to operate on a different platform.

That distinction matters. A finished decompilation can provide a technical foundation, but a PC port still requires substantial engineering. Developers may need to replace or adapt Wii-specific systems, account for different graphics and input APIs, test the game across a wide range of hardware, and ensure that changes do not undermine the original game's timing, physics, controls, or presentation.

Why native PC ports matter to preservation fans

Emulation remains one of the most important ways to revisit older console games, including Wii titles. It can offer compatibility features, controller mapping, visual adjustments, and performance options that were unavailable on original hardware. A native PC port, by contrast, generally aims to run the game through code compiled specifically for a PC environment rather than simulating the original console.

That difference can create room for more extensive technical changes. Depending on a project's design, native builds may be able to handle ultrawide displays, higher frame rates, mouse or controller layouts, mod support, and modern graphics settings more directly. None of those features have been confirmed for Astrocore, and fans should be cautious about assuming every commonly requested enhancement will be included. Still, the possibility is a major reason completed decompilations generate such excitement.

Over the past several years, similar community-led technical efforts have helped bring games without official PC versions to new audiences. The appeal is not solely visual upgrades. Preservation-minded players also value the prospect of keeping older games accessible as original hardware becomes harder to obtain, discs deteriorate, accessories fail, and official digital storefront availability changes over time.

Super Mario Galaxy is already playable in other forms, including its appearance in the Nintendo Switch collection Super Mario 3D All-Stars. But the Wii original has its own hardware assumptions, particularly in its use of Wii Remote pointing and motion controls. A PC-oriented adaptation will therefore need to make careful choices about how those interactions are handled. The footage confirms the port is in development, but it does not settle how every control-dependent mechanic will work in the eventual release.

A human-coded pledge amid AI concerns

The developers' human-coded statement is not a throwaway detail. It reflects a tense conversation currently affecting many volunteer software projects. Generative AI tools are increasingly being used to generate code, but maintainers of technical projects have raised concerns about unverifiable authorship, inaccurate suggestions, inconsistent style, hidden licensing complications, and the extra review burden created by low-quality automated submissions.

Those concerns can be particularly significant for decompilation and emulation work. Projects in these areas depend on precision, reproducibility, and rigorous validation. A piece of code that appears plausible but does not faithfully replicate the original behavior can create bugs that are difficult to diagnose. Community projects also rely heavily on trust between maintainers and contributors, making clear documentation of where code comes from an important practical issue rather than merely a philosophical one.

Astrocore's developers are positioning their work firmly on the side of direct human authorship. That does not by itself predict the port's eventual quality or release schedule, but it tells prospective users what standard the team wants associated with its process. In a scene where public enthusiasm can quickly turn into skepticism, especially around ambitious claims, that transparency may help the group establish confidence as development continues.

Super Mario Galaxy 2 is next on the team's list

The group has also discussed where its efforts may go after Astrocore's immediate work and cleanup tasks are complete. Luma's Workshop says its decompilation team plans to move on to Super Mario Galaxy 2, the 2010 Wii sequel.

That prospect is likely to excite fans who consider the follow-up one of the finest games on the system. Galaxy 2 builds on the first game's gravity-based platforming while introducing fresh power-ups, Yoshi-focused stages, new transformations, and a more level-driven progression structure. It also contains its own technical differences and gameplay systems, meaning a future decompilation and PC-port effort would be a major undertaking in its own right.

For now, though, Galaxy 2 remains a future target rather than an announced port with a defined timetable. The team specifically intends to complete cleanup work after the original Super Mario Galaxy decompilation before moving forward. That leaves Astrocore as the project to watch, and it would be premature to assume a sequel port is close at hand.

Availability and legal questions remain unresolved

As with many unofficial projects based on Nintendo games, Astrocore exists in a legally sensitive space. Nintendo retains ownership of Super Mario Galaxy and its associated intellectual property. Fan-made technical projects can face takedown requests or other legal pressure, and no guarantee can be made that an unofficial release will remain available once it is distributed.

The developers have not provided full public details on how Astrocore will be released, what files users may need, or which assets will be included or excluded. Those details are important in projects involving proprietary games, and interested players should wait for official statements from the development community rather than relying on reposts, unverified downloads, or claims of early builds.

There is also no stated release date beyond the team's expectation that it will arrive soon. "Soon" can mean very different things in volunteer development, especially when a project enters broad testing and compatibility work. A decompilation's completion is a remarkable milestone, but it is not automatically the finish line for a polished, stable PC release.

A significant milestone for a Wii-era favorite

Even with those caveats, the full Super Mario Galaxy decompilation is a significant accomplishment. The game remains a landmark Wii release and a defining entry in 3D platforming, celebrated for turning its celestial theme into constantly changing movement and level-design ideas. The prospect of a native PC version gives the project a high profile, while the stated commitment to human-written code adds another dimension to its reception.

Astrocore has not yet provided a final release window or a detailed rundown of what the port will offer. What is clear is that the technical groundwork has reached an important point, the team has demonstrated the PC project running, and Super Mario Galaxy 2 has already been identified as the next long-term decompilation objective. For preservation enthusiasts and Mario fans alike, it is a development worth following closely--while keeping expectations grounded until the port's distribution plans and final feature set are made clear.