head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Optimization · Systems & Chaos
A visual novel thriller mixing escape-room puzzles with branching life-or-death story routes.

Optimization · Systems & Chaos
Turn-based dungeon crawling testing resource management against randomised floors.
999: Nine Hours, Nine Persons, Nine Doors leans Optimization (Systems & Chaos); Pokémon Mystery Dungeon: Gates to Infinity leans Optimization (Systems & Chaos).
Pokémon Mystery Dungeon: Gates to Infinity leans a little harder on execution, though the gap is small.
999: Nine Hours, Nine Persons, Nine Doors
Tapping through text and puzzles, zero dexterity
Pokémon Mystery Dungeon: Gates to Infinity
Turn-based grid moves involve no dexterity
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
999: Nine Hours, Nine Persons, Nine Doors
Characters follow a fixed script, never adapt
Pokémon Mystery Dungeon: Gates to Infinity
Dungeon Pokémon follow simple rules, never adapt
Pokémon Mystery Dungeon: Gates to Infinity leans a little harder on variance, though the gap is small.
999: Nine Hours, Nine Persons, Nine Doors
Hidden story branches and twists drive first playthroughs
Pokémon Mystery Dungeon: Gates to Infinity
Random floor layouts and item spawns vary each delve
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
999: Nine Hours, Nine Persons, Nine Doors
Escape-room puzzles and route flowchart are fully solvable
Pokémon Mystery Dungeon: Gates to Infinity
Team builds and item management converge to known strategies
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.
full breakdown
999: Nine Hours, Nine Persons, Nine Doors →
full breakdown
Pokémon Mystery Dungeon: Gates to Infinity →