Echoes Unbound (Metroid Prime 2: Echoes native PC port)

Metroid Prime 2: Echoes (Retro Studios, 2004) has never had a PC release; on Nintendo hardware it was last sold in Metroid Prime Trilogy for Wii. This port comes from the author of the Metroid Prime PC port and uses the same approach. The repository was created on 21 October 2026, the first pre-release followed on 28 October, and there were seven releases in its first three days.

What it is

• A decompilation-based port: PrimeDecomp’s decompilation of Echoes rebuilds the game’s code as C and C++ source, and this project compiles it for PC and phones instead of the GameCube.
• Aurora (SDL3 and WebGPU) stands in for the GameCube’s graphics hardware, the same layer as in the Metroid Prime port.
• PC extras listed in the README: widescreen with a widescreen-aware HUD, render scale and high frame rates with interpolation, FOV, MSAA and anisotropic filtering, mouse, twin-stick and gyro aim with full rebinding, skippable cutscenes and a portal transition skip, save states, a photo mode and an in-game timer.
• Optional tweaks such as Fast Morph, Spring Ball, Toggle Lock-On and Sticky Charge, with an “Original experience” switch that restores the retail behaviour.
• Trilogy support: Trilogy’s HUD frames and reticles and, opt-in, its radial beam and visor menus.
• Saves and mods: memory card import and export (including Dolphin and PrimeHack folders), drop-in mod folders, an HD texture pack and an item randomizer.

Every setting lives in the F1 overlay (Start + Back on a controller).

Current status

When we checked on 30 October 2026 the issue tracker had 8 open items, among them a Scan Visor that does not work for some players, a HUD misalignment in Morph Ball and a rapid-fire audio bug. The v0.6.6 notes fix a crash after the Dark Alpha Splinter’s death cutscene and add multiplayer arena fixes and new cheats. We couldn’t confirm that the whole game plays through.

What you need

• A disc image of your own copy: GameCube USA (G2ME01) or PAL (G2MP01), or Wii Metroid Prime Trilogy (R3ME01 USA, R3MP01 PAL), as .iso, .gcm, .rvz, .wia, .gcz, .ciso or .wbfs.
• Windows or Linux (64-bit), or an arm64 Android phone.

We don’t explain how to obtain or copy game data.

How it installs

At a high level: download the build for your system from the official releases page, start it, and pick your disc image when it asks. Android shows a file picker and copies the image into the app. Settings, controls, saves and logs go into a user/ folder beside the program.

What the download contains

The releases contain no disc image, textures or other game assets, as the README and the release notes say. They are, however, compiled from the decompiled game code. The project’s NOTICE says the code under src/ and include/ derives from Nintendo’s retail executable, remains Nintendo’s, and that no permission to redistribute it is asserted. The MIT licence covers only the port’s own layer, scripts and tools.

Is it official, and will it stay up?

• Echoes Unbound is an unofficial fan project, not affiliated with Nintendo, Retro Studios or PrimeDecomp. The README asks users to report problems to the port, not to PrimeDecomp.
• We found no takedown when we checked on 30 October 2026. Because its releases are built from Nintendo’s code, that could change.
• Get builds only from the official GitHub releases page; copies on other sites are not the author’s.

Not working?

An “unsupported disc” message means your image is not one of the releases above. The log is in the user folder (F1 > System > Log); attach it when you report a problem on the repository’s issue tracker. For the first game, see the Metroid Prime PC port, and for every other native port we track, the recompiled games list.

Unofficial. This page is written by an independent directory. It is not made by, endorsed by or affiliated with Nintendo (developed by Retro Studios) or Odrannnn (Echoes Unbound (Metroid Prime 2: Echoes native PC port)'s author). We do not host any files, and we never link to game files, ROMs or ISOs.