Free Alternatives to Minecraft
Short answer
Luanti is the best free alternative to Minecraft: a free, open-source voxel game engine with hundreds of downloadable game modes, a 150 MB install, and support for low-end hardware. It is a platform rather than a single game, so install a game mode before judging it.
Minecraft costs money and there is no free tier beyond a browser demo. The strongest free option is not a clone but a voxel game *engine* with hundreds of distinct games built on it — including several that go well past what vanilla Minecraft offers.
Our pick: Luanti

Luanti (formerly Minetest) is a free, open-source voxel engine with a built-in content browser offering hundreds of community game modes. It runs on hardware Minecraft cannot touch and installs in 150 MB.
How it differs from Minecraft: Vanilla Luanti is intentionally sparse — it is a platform, not a finished game. Install a game mode first; the default experience is not representative.
All free Minecraft alternatives compared
Luanti
Luanti (formerly Minetest) is a free, open-source voxel engine with a built-in content browser offering hundreds of community game modes. It runs on hardware Minecraft cannot touch and installs in 150 MB.
The difference: Vanilla Luanti is intentionally sparse — it is a platform, not a finished game. Install a game mode first; the default experience is not representative.
Luanti clears all five: free with no monetisation, a mature and stable engine, actively developed, genuinely excellent as a platform, and open-source so it cannot be taken away.
Veloren
Veloren takes the voxel world and builds a full action-RPG in it, with procedural terrain, character progression and combat.
The difference: Adventure and combat focus rather than free-form building. Much less emphasis on construction.
Veloren clears four of five. It is genuinely free, very actively developed, good on its own merits and permanently open-source — but it is openly pre-release, and systems still change between versions. We list it because what exists is already worth playing, with that caveat stated plainly.
Mindustry
For the automation and redstone-engineering side of Minecraft specifically, Mindustry does that better than Minecraft does.
The difference: 2D top-down, no exploration or building for its own sake. Pure logistics and defence.
Mindustry clears all five: free with no monetisation on desktop, complete and heavily content-rich, actively developed, easily good enough to sell, and open-source under GPL-3.0.
Questions
What is the best free alternative to Minecraft?
Luanti is the best free alternative to Minecraft: a free, open-source voxel game engine with hundreds of downloadable game modes, a 150 MB install, and support for low-end hardware. It is a platform rather than a single game, so install a game mode before judging it.
Are these Minecraft alternatives really free?
Yes. Every game listed here is free with no trial, no paywalled content and no pay-to-win purchases. All are open-source, which means they cannot be delisted or shut down. Each has been assessed against PlayBound's five published criteria.
Do I need to pay for multiplayer in these Minecraft alternatives?
No. None of these games charge for multiplayer. Public servers are community-run and free to join, and there is no subscription of any kind.
How is Luanti different from Minecraft?
Vanilla Luanti is intentionally sparse — it is a platform, not a finished game. Install a game mode first; the default experience is not representative.
How is Veloren different from Minecraft?
Adventure and combat focus rather than free-form building. Much less emphasis on construction.
How is Mindustry different from Minecraft?
2D top-down, no exploration or building for its own sake. Pure logistics and defence.
Every game here has been assessed against the PlayBound Bar — five published criteria for whether a free game is actually worth your time.