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 · Pure Optimization
A physics-puzzle horror game where methodical object manipulation and route knowledge reduce all tension.

Optimization · Pure Optimization
Open-world detective work testing evidence deduction without hand-holding.
Penumbra: Overture leans Optimization (Pure Optimization); The Sinking City leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Penumbra: Overture
Physics-based interaction and basic evasion; low precision demand
The Sinking City
Clunky combat is deliberately undemanding
Penumbra: Overture leans a little harder on reads, though the gap is small.
Penumbra: Overture
Dogs follow scripted patrol and alarm states
The Sinking City
Monsters and citizens follow fixed scripts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Penumbra: Overture
Some item placements are hidden on first run
The Sinking City
Case clues are hidden information until investigated
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Penumbra: Overture
Puzzle solutions and safe-zone routing are fully learnable
The Sinking City
Cross-referencing evidence and city archives is the deduction core
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.