Most people think of Dungeons and Dragons (D&D) as a place for imagination, dice, and heroic misadventures. Yet a team of computer scientists has turned this iconic tabletop game into something far more ambitious: a laboratory for understanding how artificial intelligence behaves when it must operate independently for long periods. Their research paper, Setting the DC: Tool-Grounded D&D Simulations to Test LLM Agents, paired with the recent TechXplore article on the same work, reveals why D&D