I made an agent play Slay the Spire 2 on its own — and what unlocked it was the game saying 'no'
I made an agent play Slay the Spire 2 on its own — and what unlocked it was the game saying 'no' On 08/09/2026, an agent played an entire solo combat of Slay the Spire 2 with no human intervention : 7 turns, 35 actions, 0 rejections. Before any enthusiasm, the honest scope: this is a session record , not an audited benchmark — I don't have the raw log of that fight archived, and reproduction goes…
I initiated an agent to autonomously play Slay the Spire 2 — and the pivotal turning point was the game's response of "no." On August 9, 2026, an agent completed an entire solo combat of Slay the Spire 2 with zero human interaction, achieving 7 turns, 35 actions, and 0 rejections. This represents a personal record, not a verified benchmark, as I lack the raw log of the fight and reproduction requires a synthetic harness and versioned artifacts.
The critical factor driving this achievement was not the sophistication of the AI, but rather the game's refusal and the agent's subsequent learning from it. The two primary challenges in this endeavor were not overcome through smarter AI, but rather through the game's refusal and the agent's adaptation to it.
Written by urgent.news from Dev.to's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
