AI researchers stranded Claude on a virtual desert island. It started to “play.”

Key points

• Researchers repeatedly stranded them alone on a virtual desert island for 30 hours in an experiment reminiscent of the movies Cast Away or Home Alone.1
• The agents—copies of Claude Opus 4.7 nicknamed Eko—were able to write instructions that moved their virtual avatars around the simulated island, which was loosely based on the video game Roblox.1
• AI systems are usually trained through supervised learning, where they copy examples provided by humans, or through reinforcement learning, where they pursue a reward through trial and error.1
• But was Eko actually playing, or was the word-prediction engine simply role-playing what a playful agent would do in this scenario? “All of this could be role-playing,” admits Nathan Cloos, another MIT researcher and author on the paper. “But we show that it’s not just hallucinating the play.1

Sources (1)

• [1]AI researchers stranded Claude on a virtual desert island. It started to “play.”
  MIT Technology Review (AI) · Oct 19, 09:08 AM

  What do AI agents do if you don’t tell them to do anything?

  Researchers repeatedly stranded them alone on a virtual desert island for 30 hours in an experiment reminiscent of the movies Cast Away or Home Alone.

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