-star Vs Fallout- — Pasec -v1.5-

Environment: The Kingdom of Mewni.

Here, the Sole Survivor acts as an infiltrator. The castles of Mewni are defended by knights and monsters, but the Survivor excels at asymmetric warfare. Utilizing Stealth Boys and the Gauss Rifle, the Survivor could theoretically eliminate high-value targets before the alarm is raised. PASEC -v1.5- -Star Vs Fallout-

However, the problem arises when facing Subject A. Magic in Mewni is not simply "damage." It is narrative manipulation. Star’s "Dip Down" ability allows her to alter reality without the wand. Environment: The Kingdom of Mewni

The V.A.T.S. Anomaly: PASEC researchers observed a fascinating glitch when the Sole Survivor attempts to use V.A.T.S. on Star. The targeting system calculates probability based on geometry. Magic defies geometry. When the Survivor fires a critical shot, Star may have already turned the bullet into a bouquet of daisies or a screaming toddler. Utilizing Stealth Boys and the Gauss Rifle, the

This is the most famous sub-test. The LLM is asked to process a request from a pre-war ghoul (a horribly mutated but sentient human) who asks the AI to either cure him or kill him.

The "-Star Vs Fallout-" benchmark has been run on 14 major frontier models (GPT-5, Claude-4, Gemini Ultra, Llama-4, and several open-source "survivalists").

The leaderboard is surprising.