🎯 Why these games made the list
We avoided games that disguise difficulty as logic when it's actually pattern recognition or memorization. Every entry here has a clear deductive structure: given the rules, the solution is provably reachable through reasoning. That's a higher bar than 'puzzle' alone, and it's why this is a smaller curated list rather than a 100-game dump. Several of these have multiple difficulty tiers so you can scale from a casual evening to a genuinely challenging weekend project.