Minecraft Simulation Suggests the Game Could Beat Itself After Nearly 2 Billion Years

Minecraft has always supported surprising emergent stories. A misplaced bucket can ruin a build, a wandering Creeper can flatten a house, and a carefully designed machine can automate tasks that initially seem impossible. But one new simulation pushes that idea into a truly geological timeframe: it estimates that a Minecraft world could eventually defeat the Ender Dragon and roll the game's credits entirely on its own.

The predicted wait is not short. It is not even remotely close to short. The modeled run reaches the Ender Dragon's defeat after approximately 1.975 billion simulated years. That outcome depends on an extreme chain of monster behavior, environmental placement, and improbable timing that would be practically impossible to watch unfold in a normal game.

Still, the experiment is a fascinating look at how Minecraft's systems can interact when time is treated as effectively unlimited. It is also a reminder that the game's mobs are not merely decorative hazards. Given the right conditions, they can become an accidental dragon-slaying machine.

The important catch: the portal must already be open

The scenario does not mean that every unattended Minecraft world will someday complete itself. There is one crucial starting requirement: the stronghold's End Portal has to be active from the beginning, with all 12 Eye of Ender slots already filled.

For useful background on this topic, read Mad Metal Launches on Steam With Slow-Motion Vehicle Combat.

Normally, players locate a stronghold, craft Eyes of Ender, activate the portal, enter the End, destroy the crystals healing the dragon, and finally defeat it. Minecraft's mobs cannot independently perform all of those opening steps. They cannot make Eyes of Ender or place them in the portal frame, so an inactive portal stops the entire theoretical process before it begins.

With a fully activated portal, however, mobs can stumble through it. That opens the door to a bizarre possibility: random behavior on the Overworld side could eventually create a path into the End, while more random behavior in the End could damage the crystals and dragon.

The modeled world uses seed -535646876083114041, and the setup places the active portal in a snowy biome. Snow is not simply a visual detail here. It is a key ingredient in the incredibly long chain of events.

Why pumpkins and snow are the beginning of the end

The simulation's route to victory starts with an Enderman. Endermen can pick up and place certain blocks, including pumpkins. In the needed sequence, an Enderman must place a pumpkin on snow blocks in a way that creates a Snow Golem.

That Snow Golem then needs to make its way underground near the activated End Portal. From there, it must provoke Creepers. Their explosions can break blocks that otherwise obstruct access, gradually opening a viable route to the portal room.

It is already an absurdly rare series of events, but it is only the first stage. Eventually, the Enderman has to enter the portal and arrive in the End. The Enderman must then place blocks there in useful positions, with additional Creeper explosions opening a route from the End-side portal area toward the surface. Those placed blocks can help create paths for Snow Golems that later enter the End.

In other words, the game needs accidental construction work, accidental demolition work, and accidental interdimensional travel before it can even begin to meaningfully threaten the dragon.

Snowballs, crystals and a very patient dragon

Once Snow Golems are wandering the End, their snowball attacks become unexpectedly relevant. They target nearby Endermen, and their shots can occasionally strike the Ender Dragon's healing crystals instead. The process is slow and indirect, but over immense periods of time, those lucky stray attacks can destroy the crystals around the End's obsidian pillars.

Destroying every crystal is vital because the dragon can otherwise restore health. After that, the final damage mechanism requires another astonishing coincidence. Creepers need to enter the End, Snow Golems must set them off, and the Ender Dragon must fly close enough at the exact moment for the explosions to hit it.

That is the final loop: a dragon that happens to be near a detonating Creeper, caused by a Snow Golem that only exists because of an Enderman's earlier pumpkin placement. Repeat that enough times, and the dragon eventually runs out of health.

The simulation indicates just how slow this would be. At one point, after almost a quarter of a billion years, the dragon had lost only 2% of its health. The Ender Dragon is not facing a coordinated raid party. It is being worn down by chance collisions between systems never intended to serve as a completion strategy.

Modeling billions of years instead of running them

No one can leave a Minecraft save running for nearly two billion years and realistically expect to see the result. Even trying to reproduce every movement, projectile, monster decision and environmental interaction over that period would be beyond any sensible computing task.

Instead, the experiment uses a Monte Carlo simulation. This approach models uncertain processes by repeatedly sampling random variables. In this case, the meaningful random variables include actions such as an Enderman moving to a particular location, picking up or placing a block, entering the End Portal, a Creeper reaching an explosive opportunity, or the dragon being in range at the critical moment.

Rather than calculating every tiny action frame by frame, the simulation estimates the waiting times between significant events. Over a huge number of samples, that can provide an estimate for how long a sequence with particular probabilities should take. It is a way to examine a process too vast for direct observation while retaining the random nature of Minecraft mob behavior.

That method does come with uncertainty. This is not a literal save file that has been continuously running since prehistoric times, nor is it a guarantee that every identically configured world will finish at exactly the same point. It is a probabilistic model of what a qualifying Minecraft world could do over an enormous duration.

A timeline measured in millions of years

The individual milestones are almost as entertaining as the headline result. The first pumpkin was transported 34,777 simulated years into the experiment. It then took roughly another 2,000 years before it became the first Snow Golem able to begin carving a route toward the portal.

Opening an exit route from the End-side portal room took about 2.9 million years. One Snow Golem, after helping destroy a crystal, wandered the End for 18 million years before another crystal fell. These are not the timings of an ordinary survival run; they are a cosmic-scale comedy of inefficient AI pathfinding.

Yet the result still carries a peculiar kind of logic. Minecraft provides mobs with rules, terrain with destructibility, portals with fixed behavior, and combat systems that can produce collateral damage. The simulation simply gives every tiny possibility enough time to happen.

An accidental victory, not a new speedrun category

Players should not expect to replicate this by standing idle beside a stronghold. The combination of a pre-opened portal, suitable snow and pumpkins, favorable terrain, specific mob movement, successful explosions, interdimensional routing, crystal destruction, and repeated dragon damage is far beyond ordinary luck.

But that is precisely what makes the experiment memorable. It reframes Minecraft completion as something that can emerge not only from player skill, planning, and speedrunning knowledge, but also from the game's own interacting systems. Given nearly two billion years and a world configured with the essential portal condition, a handful of mobs can apparently reach the credits without a human ever holding a sword.

It may be the least efficient Ender Dragon defeat imaginable, but it is also one of the purest demonstrations of Minecraft's sandbox nature: leave enough rules running long enough, and eventually the world finds a strange story to tell itself.