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Repair Windows errors before they cause bigger problemsFix Now →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Footage reportedly showing a playable, unfinished build of Project Harmony, an unannounced Retro Studios game, appeared online in April 2025. Coverage describes a fairy protagonist, transformation-based puzzles and music-related encounters. The build is said to date to 2017, but that date and the leak’s provenance have not been independently authenticated in the reviewed reporting. The claim that the project was “a huge disaster” comes from content creator Reece “Kiwi Talkz” Reilly—not from Nintendo or Retro Studios.
What the leaked Project Harmony footage reportedly shows
VGC reported on 7 April 2025 that footage from a Retro Studios prototype titled Harmony had appeared online. The outlet described a third-person fairy character who could transform into different characters to solve puzzles. VGC said the build was claimed to date from 2017; this is a reported date, not a verified development record. VGC’s report on the footage.
In a 9 April account, TwistedVoxel described a wand-wielding protagonist, a companion creature, creature-assisted traversal and combat, and an encounter involving singing. These are press descriptions of leaked footage, not official design documentation. TwistedVoxel’s account.
Why it is described as a music RPG—and a “huge disaster”
The music-RPG description predates the leaked footage. Nintendo Everything reported on 6 January 2025 that Reilly had said Retro worked on a music RPG between Donkey Kong Country: Tropical Freeze and Metroid Prime Remastered, with singing as its main mechanic. Nintendo Everything stated that Nintendo had not confirmed his report. Nintendo Everything’s report on Reilly’s claim.
#1 Best Overall
- The next evolution of Nintendo Switch
- One system, three play modes: TV, Tabletop, and Handheld
- Larger, vivid, 7.9” LCD touch screen with support for HDR and up to 120 fps
- Dock that supports 4K when connected to a compatible TV*
- GameChat** lets you voice chat, share your game screen, and connect via video chat as you play
“A huge disaster” is Reilly’s characterization as relayed by news coverage, not an established Nintendo assessment or independently verified finding. The phrase should not be mistaken for an official explanation of why development ended. Nintendo Life’s report quoting the characterization.
What is known about the build and the leak
VGC wrote that the footage was believed to have come from a Nintendo Switch development kit that had been sold online. The reviewed coverage does not document a complete chain of custody or authenticate every file, so the precise provenance remains uncertain.
Rank #2
- 6.2” LCD screen
- Three play modes: TV, tabletop, and handheld
- Local co-op, online, and local wireless multiplayer
- Detachable Joy-Con controllers
- Nintendo Switch is the home of Mario & friends
The build is described as unfinished. VGC said circulating reports called it playable in a basic state, with temporary assets and environments; TwistedVoxel also characterized it as allegedly playable but unfinished. That does not mean the game was a finished release—or that ordinary Switch owners can buy or run it. The reporting identifies no retail release.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What has not been confirmed
Nintendo and Retro Studios have not officially confirmed the reported game history or the reason the project ended in the coverage reviewed here. That coverage also does not establish Harmony’s budget, staffing, exact development span, internal milestones or documented cancellation rationale. Accordingly, the footage and Reilly’s earlier account provide reported claims, not a complete or officially verified history of the project.
Rank #3
- Play your way with the Nintendo Switch gaming system. Whether you’re at home or on the go, solo or with friends, the Nintendo Switch system is designed to fit your life. Dock your Nintendo Switch to enjoy HD gaming on your TV. Heading out? Just undock your console and keep playing in handheld mode
- This model includes battery life of approximately 4.5 - 9 hours.
- The battery life will depend on the games you play. For instance, the battery will last approximately 5.5 hours for The Legend of Zelda: Breath of the Wild (games sold separately)
- Model number HAC 001( 01)
Retro Studios’ connection to Metroid Prime identifies the developer, not the leaked game’s franchise: the reports describe Harmony as a separate prototype, not a Metroid title.
Quick Recap
Best Value
- One player can use a Joy-Con in each hand
- Two players can each take one
- Multiple Joy-Con can be employed by numerous people for a variety of gameplay options (additional Joy-Con sold separately)
- Slip a set of Joy-Con into a Joy-Con grip accessory, mirroring a more traditional controller. Or, select an optional Nintendo Switch Pro Controller.
Rank #4
- This pre-owned product is not Apple certified, but has been professionally inspected, tested and cleaned by Amazon-qualified suppliers.
- 6.2” LCD screen.
- Three play modes: TV, tabletop, and handheld
- Local co-op, online, and local wireless multiplayer
- Detachable Joy-Con controllers
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
