A Bot Says Cubes Are Minecraft. Google Took 46 Days Last Time.
TL;DR
On August 27 the Luanti team announced that its Android app had disappeared from Google Play. The DMCA notice behind the removal was filed on Microsoft's behalf by Tracer.AI, a brand-protection company that sells automated infringement detection, and it claims the open-source voxel engine infringes Minecraft. The notice names exactly one copyright registration and exactly zero infringing assets. Luanti ships no game assets. The same company filed the same claim against the same app in 2023, and Google took 46 days to undo it against a statutory ceiling of 14 business days. As we write this, the Play listing still returns a 404.
The notice cites a registration and nothing else
Here is the complete substance of the claim, as quoted by the Luanti team:
These products use copyrighted assets as outlined directly from the Minecraft game (available at www.minecraft.net) without authorization and should be removed. Specifically, US Reg. #TX 8-192-097
That registration number is Minecraft Java Edition 1.9, on file with the US Copyright Office. It is a valid registration for a real thing. What the notice never does is connect it to a single texture, sound, string, or line of code inside Luanti.
It cites a statute the way a parking ticket cites a statute, except nobody ever walked over and looked at the car.
What Luanti actually ships
Luanti is a game-creation platform, not a game. Install it and you get an engine, a main menu, and a server browser. It bundles no games and no game assets by default. Minetest Game, the bare-bones survival game it used to ship with, was unbundled in December 2023 and now downloads like any other community package.
The content itself lives in ContentDB, the in-app catalog. Pull its public API today and you get about 3,400 packages, 182 of them full games, every one reviewed by hand by volunteer staff before approval. The team explicitly checks for commercial assets during that review.
There is a quiet irony in the middle of the Luanti team's response. They are building automated asset flagging themselves, using conventional perceptual hashing, and they went out of their way to say a human makes the final call. The people accused by a bot are shipping the version of the tool that keeps a person in the loop.
Cubes are not copyrightable, and that is written down
17 U.S.C. 102(b) is unambiguous that copyright does not extend to an idea, concept, or principle. A game made of 3D cubes is a genre, not an asset. Minecraft itself took the form from Infiniminer in 2009. Luanti started in 2010 as Minetest, written by celeron55 to get a voxel sandbox running on low-end hardware, picked up a Lua modding API in 2011, and renamed itself in 2024 to stop being read as a clone.
Mojang and Microsoft can absolutely enforce their rights over Minecraft's actual textures and code. Neither the DMCA nor a takedown vendor gives them a claim on the cube.
Tracer's own numbers explain the failure mode
You do not need to speculate about what went wrong. Tracer published the answer in a July 2024 post about its human-in-the-loop AI, and every figure below is theirs.
Tracer says it cut takedown time from an industry average of 60 days to 9, an 85% reduction. It reports a 100% increase in reviews handled month over month, review times six times faster than traditional methods, and a 44% increase in takedowns month over month. Its newer agentic system, Flora, is pitched as cutting the time a brand misuse stays live by up to 80%.
Read that list again as a spec. It is a system optimized end to end for throughput and latency, with no published counterpart for precision. When you tune a pipeline that way, a false positive is not a bug in the system. It is the system doing exactly what it was measured on.
The counter notice is the slow half, and it is slow on purpose
Notice-and-takedown is a fire alarm wired straight to the sprinklers. Anyone on the street can pull it, the platform gets its safe harbor the instant the water comes down, and drying out the building is entirely your problem.
The statute does try to bound that. Section 512(g)(2)(C) requires a provider to replace removed material "not less than 10, nor more than 14, business days following receipt of the counter notice." Luanti filed its 2023 counter notice on 25 March and got the app back on 10 May.
There is a second cost the chart cannot show. Filing a counter notice means consenting to the jurisdiction of a US federal district court. For a non-profit run by volunteers, or a solo developer outside the US, the remedy for a baseless machine-generated accusation is to volunteer for American litigation. Most people will just eat the takedown, which is the part of this that actually scales.
The DMCA does have teeth pointed the other way. Section 512(f) makes anyone who "knowingly materially misrepresents" that material is infringing liable for damages, costs, and attorneys' fees. Proving what an automated pipeline knew is a different problem entirely.
Third time through the same genre
On 10 February 2026, Valve pulled the store page and demo for Allumeria, a voxel sandbox by the developer Unomelon, after a Tracer.AI notice filed for Microsoft. Per Kotaku, the claim leaned on a single screenshot of a voxel world with birch trees, tall grass, a blue sky, and pumpkins.
It was back in about twelve hours, restored after Mojang's chief creative officer Jens Bergensten looked into it and Microsoft withdrew the claim. Twelve hours is what happens when a human at the rightsholder actually opens the screenshot. Forty-six days is what happens when nobody does.
What this means if you ship anything
The interesting shift here is not that a bot was wrong. Automated enforcement has always been wrong sometimes. The shift is that the marginal cost of filing has collapsed to roughly zero while the cost of defending has not moved at all, and vendors are now selling that collapse as the product. A 44% month-over-month lift in takedowns is a great slide for a brand-protection pitch and a terrible property for a legal instrument that removes software from the only store most Android users have.
Concrete things to take from this:
- A single distribution channel is a single point of failure. Luanti survives this because the app is also on F-Droid and as a direct APK from its own site. If Google Play is your only door, an unverified accusation closes your business.
- Visual similarity is now an enforcement signal. If your product occupies an art style or genre that a large rightsholder is associated with, you are in a detector's training distribution whether or not you copied anything.
- Keep a provenance trail you can hand over in an afternoon. Luanti could answer instantly because its licensing is documented and its catalog is human-reviewed. That is the difference between a rebuttal and a scramble.
The Luanti team's ask is narrow and reasonable: that detections be verified by a human and substantiated with actual proof before a notice goes out, and that Google stop treating the counter-notice window as a suggestion. Neither of those requires new law. Both require somebody to be measured on being right rather than on being fast.
Key Takeaways
- Luanti's Android app was removed from Google Play on a DMCA notice filed for Microsoft by Tracer.AI, citing Minecraft registration TX 8-192-097 and identifying no infringing asset. The engine ships no game assets at all.
- This is the second such notice against the same app from the same filer. The 2023 round took 46 calendar days to reverse, roughly 33 business days, against the statute's 10-to-14 business day requirement.
- Every performance figure Tracer publishes is about speed or volume: 60 days down to 9, 6x faster reviews, 44% more takedowns month over month. There is no published accuracy number.
- Filing a counter notice means consenting to US federal court jurisdiction, so the cheapest option for most small developers is to absorb the removal and say nothing.
- The same filer hit the indie voxel game Allumeria in February 2026 over one screenshot. It came back in twelve hours only because a human at Mojang intervened.
- Ship through more than one channel. F-Droid and a direct APK are the reason this is an outage for Luanti rather than an extinction event.
Sources: Luanti Blog, Tracer AI, Tracer AI (Flora press release), 17 U.S.C. 512, 17 U.S.C. 102, Kotaku, ContentDB, Allumeria on Steam