head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, 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
A social-intrigue RPG where you spend skill resources to exploit dinner guests' scripted psychological weaknesses.
999: Nine Hours, Nine Persons, Nine Doors leans Optimization (Systems & Chaos); The Council leans Optimization (Systems & Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
999: Nine Hours, Nine Persons, Nine Doors
Tapping through text and puzzles, zero dexterity
The Council
Menu-driven confrontations; no dexterity.
The Council leans a little harder on reads, though the gap is small.
999: Nine Hours, Nine Persons, Nine Doors
Characters follow a fixed script, never adapt
The Council
NPCs have vulnerabilities and immunities, but fully scripted.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
999: Nine Hours, Nine Persons, Nine Doors
Hidden story branches and twists drive first playthroughs
The Council
Hidden character traits and unknown consequences until learned.
999: Nine Hours, Nine Persons, Nine Doors leans a little harder on optimization, though the gap is small.
999: Nine Hours, Nine Persons, Nine Doors
Escape-room puzzles and route flowchart are fully solvable
The Council
Skill points, effort resources and exploiting known weaknesses are systemic.
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.