Disco Elysium
The most sophisticated investigation game ever made. Your detective's ability to gather and interpret evidence is governed by a skill system representing different facets of his personality and cognition. High Empathy lets you read people more accurately; high Intellect produces different analytical frameworks. The same evidence produces different inferences depending on who your detective is. It is a game that genuinely rewards curiosity, thought, and lateral reasoning.
Return of the Obra Dinn
A masterpiece of pure deduction. You are given the logbook of a ghost ship and tasked with determining the fate of every crew member. The puzzle is presented with limited guidance — you see moments from the past, identify who is present, and must reason backward from evidence to conclusion. The satisfaction of correctly identifying a crew member's identity and cause of death through pure deduction is exceptional.
The Witcher 3 — Monster Contracts
The contract system structures investigation as a short-form genre exercise: gather clues, identify the creature type, prepare correctly, execute. Each contract is a complete investigation whose solution is discovered through process rather than trial and error. The Witcher 3 demonstrates that investigation mechanics do not require an entire game — even a 30-minute contract can deliver the complete satisfaction of a solved puzzle.