Automated Tracer.AI DMCA notice pulls open-source Luanti app from Google Play

Open-source app pulled over automated copyright claim

The Android version of Luanti, an open-source voxel game-creation platform, has been removed from Google Play following a DMCA takedown filed by brand-protection company Tracer.AI on behalf of Microsoft. According to a blog post from the Luanti team, the notice alleges the app infringes Minecraft's copyright — an allegation the project rejects outright, stating that the app contains no proprietary code or assets from Minecraft or any other product.

What the notice said

According to Luanti, the notice received through Google claims the app uses copyrighted material from Minecraft without authorization, and backs this up with a single US Copyright Office registration number, TX 8-192-097, which corresponds to Minecraft Java Edition 1.9. The filing provides nothing beyond that: it names none of the assets supposedly copied, leaving the project with very little to actually respond to.

What Luanti actually ships

The team lays out its side of the inventory. Luanti is a game-creation engine that ships with no games and no game assets at all. What it does bundle — a small set of engine textures plus some fonts — is either original or properly attributed in its license file. A bare-bones test game still lives in the source repository for engine development but has not been part of releases for some time, and Minetest Game, an older bundled title, was split off from the engine in December 2023 and is now an optional download like any community-made game.

Third-party content arrives through ContentDB, the project's in-app catalog, where volunteer moderators manually review every package and check for copyright problems, including commercial assets. The team says it has been exploring conventional perceptual hashing to help flag suspicious uploads, but insists a human will always make the final decision rather than relying on error-prone AI. For rightsholders with genuine complaints, the correct route is a DMCA notice against the specific ContentDB package involved, not the app that hosts the catalog.

Cubes are not copyrighted

The blog also argues that voxel graphics as a concept belong to no one. Minecraft itself drew on the 2009 game Infiniminer, and later titles such as Hytale show that block-building games form a genre of their own. Mojang and Microsoft are entitled to protect Minecraft's actual textures and assets, the team writes, but should not be able to use DMCA notices to corner an entire genre. Luanti began in 2010 under the name Minetest, built as a lightweight, moddable sandbox inspired by Minecraft's early days; it took the Luanti name in 2024 and is also used in schools across Europe.

A repeating pattern

This is not an isolated incident. Tracer.AI sent Luanti a nearly identical notice in March 2023; the project filed a counter-notice and the app was eventually restored — after 46 days. The team points out that section 512(g)(2)(C) of the DMCA requires providers to restore removed material within 10 to 14 business days of receiving a counter-notice, and says Google's delays raise questions about how it handles appeals. In February 2026, the indie voxel game Allumeria received a similar Tracer.AI notice, also on Microsoft's behalf, and was temporarily pulled from Steam until Microsoft dropped the claim amid public pressure.

Tracer.AI markets itself as an AI-powered brand-protection platform whose agents detect and process takedowns automatically across thousands of platforms. A 2024 company blog post cited by Luanti claims 85 percent faster takedowns, review times six times quicker than traditional methods, and 44 percent more takedowns month over month.

Why it matters

The episode exposes the asymmetry built into notice-and-takedown systems: an automated claim, however vague, can cut off an app's distribution instantly, while the burden of appeal — and the weeks of downtime — falls on the accused. Luanti is a volunteer-run non-profit and says it lacks the resources to keep fighting these battles; a small commercial developer dependent on store revenue would fare even worse. In the meantime, users lose access to discovery and updates, and may drift toward unofficial, ad-laden or outright malicious forks. As AI-driven enforcement scales up, cases like this suggest platforms and rights holders need stronger verification and faster, fairer appeal processes before automated notices can quietly take legitimate software offline.