Metroid: Zero Mission NX 1.2

Screen on Top demonstration

GIF captured on Nintendo Switch. Double-tap and hold to move; pinch to resize. A single short tap waits for the 300 ms double-tap window before activating its normal control. Gameplay continues during gestures.

Corner Beside and Scanlines

Screenshot captured on Nintendo Switch.

• Added Screen on Top: a compact, live second-screen overlay. Double-tap and hold the second tap to drag it, or pinch with two fingers to resize. Its position and size are saved when your fingers lift.

• Added Corner Beside: gameplay on the left with the second screen at the lower right. Its visible bottom border aligns with gameplay in Pixel Perfect, Fit, Stretch, and Wide.

• Added optional LCD Soft, LCD Grid, and Scanlines gameplay filters. Filters default to Off, leave the second-screen UI unchanged, and rotate with gameplay in Flip Grip.

• Added saved SFX Boost from 100% to 200%, adjusting sampled and PSG effects separately from music. Default is 100%; audio reset restores it.

• Preserved R3 Popup, Side by Side, Flip Grip, the polished second-screen UI, map objectives, in-app updater, and current Wide rendering fixes.

• FLIP 270: select Flip Grip, then press the same button a second time for the opposite vertical orientation. Press again to return to normal Flip Grip. Touch controls, scales, filters, FPS, and achievement popups follow the rotation; the orientation is saved.

• Retained strict save-state build and ROM checks, with compatible migration and backup recovery for older audio/display settings.

Install or update

Extract Metroid-Zero-Mission-NX-1.2.zip to your SD card. The app belongs at switch/mzm/mzmnx.nro. Keep your own compatible ROM at switch/mzm/mzm.gba; no ROM is included.

Keep ordinary in-game saves, settings, achievement account files, and caches. Save states require their exact original build and ROM; continue from an ordinary in-game save when updating to 1.2.

Players with the 1.1 updater can use Options > General > Check for Updates after this release is published. Close and relaunch after installation. Earlier builds can be updated manually.

Credits and source

Switch adaptation by JJTapia_XX, based on tinaut1986/mzm and metroidret/mzm. Original contributor credits, licenses, and the AI-assisted development disclosure are preserved. Corresponding source and build instructions accompany the binary.

Metroid: Zero Mission NX 1.1

• Added an in-app updater under Options > General with verified GitHub downloads, an NRO backup, and rollback on installation failure.
• Added the original yellow objective marker to the second-screen map, matching the pause menu's activation and completion rules and following map zoom.
• Polished the second screen with navy panels, cyan borders, gold selections, resource cards, and clearer controls.
• Centered the labels in all five save-state slots, for both Used and Empty slots.
• Includes the current centered Wide fixes for sprites, beams and missiles, liquid layers, room-edge backgrounds, tint effects, minimap placement, and confirmation text.
• Retains strict save-state build and ROM validation; the temporary test-only bypass is not included.

Install or update

Extract Metroid-Zero-Mission-NX-1.1.zip to your SD card. The app belongs at switch/mzm/mzmnx.nro. Keep your own compatible ROM at switch/mzm/mzm.gba; no ROM is included.

Keep existing ordinary in-game saves, settings, and achievement caches. Save states from earlier builds require their original NRO and cannot be loaded in 1.1. Continue from an ordinary in-game save.

Install 1.1 manually once to gain the updater. Future updates are checked under Options > General. Close and relaunch after a successful installation.

Testing and limitations

UI controls, objective markers, updater asset selection/verification/rollback, and strict state validation are covered by local regression tests. GitHub metadata and download redirects were checked live. The supplied Switch screenshot shows a successful update check; full updater download and installation still need confirmation on hardware. USA ROMs have been tested; EU/JP ROMs and a full playthrough have not been verified.

Credits and source

Switch adaptation by JJTapia_XX, based on tinaut1986/mzm and metroidret/mzm. Contributor credits, license notices, and the AI-assisted development disclosure are preserved. Corresponding source and build instructions are included in the source asset and release tag.

New second-screen UI

Screenshots captured on Nintendo Switch.

Map and objective marker

Status

Achievements

Options and updater

Metroid: Zero Mission NX 1.0

• Added centered widescreen gameplay with extra visibility on both sides and balanced borders in small rooms.
• Fixed sprites appearing late, corrupted graphics near doors, and background fragments beyond room edges in Wide mode.
• Fixed minimap clipping and kept item, area, and save prompts centered.
• Restored the Yes/No labels when confirming a file erase.
• Kept original framing for menus, cutscenes, and room transitions.

Install or update

Extract Metroid-Zero-Mission-NX-1.0.zip to your SD card. The app belongs at switch/mzm/mzmnx.nro. Supply your own compatible ROM at switch/mzm/mzm.gba; no ROM is included.

Existing in-game saves, settings, and achievement caches remain usable. Older save states require their matching build and cannot be loaded in 1.0. Continue from an ordinary in-game save.

Comparison

Normal	Wide

Credits and source

Switch adaptation by JJTapia_XX, based on tinaut1986/mzm and metroidret/mzm. Original contributor and component credits are retained in CREDITS.md and THIRD-PARTY-LICENSES.md. AI-assisted development is disclosed in the README. Corresponding source is included as a release asset and in this tag; build instructions are in platform/switch/README.md.

USA ROM testing and local rendering/input/audio/state regressions are covered. A complete playthrough, every hardware configuration, and EU/JP ROM compatibility have not been verified. RetroAchievements supports Softcore only.

Metroid: Zero Mission NX 0.1

First experimental Nintendo Switch release of Metroid: Zero Mission NX, version 0.1 (fix13).

Maintained by JJTapia_XX; derived from tinaut1986/mzm and metroidret/mzm. Upstream history, credits, and component license notices are preserved.

Includes native gameplay/audio; R3 Second Screen Popup, Side by Side, and clockwise Flip Grip; touch map/status/settings; five save-state slots; Softcore RetroAchievements with cached definitions, queued unlock sync, and badge notifications. The first Hardcore-warning achievement is hidden from the list.

Download the installation ZIP and extract it to your SD card root. Supply your own compatible USA GBA ROM at switch/mzm/mzm.gba. No ROM is included.

The matching complete source ZIP and source tag accompany the binary. Build instructions are in platform/switch/README.md. Keep LICENSE, CREDITS.md, and THIRD-PARTY-LICENSES.md when redistributing. The software license does not grant rights to Nintendo's game or third-party artwork; artwork permissions have not been independently established.

Experimental limitations: exact-build/ROM save states; no Hardcore/leaderboards/subsets; no full-playthrough or complete hardware compatibility claim. Create new save states after updating; normal in-game saves remain separate. Never upload ra-account.cfg, tokens, ROMs, saves, states, or private account caches.