Four Gemini 4 agents defeated the Ender Dragon in Minecraft with no human intervention, Google says in a research paper. The team says that, to its knowledge, this is the first end-to-end autonomous completion of the game by AI agents, and that it used only a standard Minecraft control library, with no pre-scouted world seeds or human-written game-specific tools.
The agents played in a sandboxed, randomised survival world with no assigned roles or strategies. Each controlled a player and coordinated through in-game chat and shared memory. They divided the work, warned one another of threats, shared tips and coordinates and recovered items from dead teammates. One made tools, one gathered food and supplies, one lit a key portal, and one built shelters and landed the final blow. A fifth agent, the Observer, watched as an independent witness to check for cheating and published live and summary reports.
The run took 27.23 hours, most of it spent on the dragon. The agents wrote and ran 2,783 programs, exchanged 229 messages and died 605 times, using 1.35 billion input tokens at a cost of $810 at list price, or $1,620 at standard pricing. The team says winning required keeping a coherent plan across thousands of dependent steps for more than a day. The work is described as evidence that general agentic models can now handle complex games that previously needed custom software. The researchers have not been named, and the cost, runtime and number of deaths are the main limits noted.
