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
Frictional's defenseless first-person horror where you solve physics puzzles while hiding from the infected.

Optimization · Pure Optimization
Mastering a richly simulated survival world through its layered metallurgy and seasonal farming systems.
Penumbra: Black Plague leans Optimization (Systems & Chaos); Vintage Story leans Optimization (Pure Optimization).
Vintage Story leans a little harder on execution, though the gap is small.
Penumbra: Black Plague
Physics-grab interactions need only basic mouse control
Vintage Story
Combat has deliberate timing; temporal storms add pressure
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Penumbra: Black Plague
Infected patrol on scripts; hiding beats them every time
Vintage Story
Drifters and enemies use scripted attack patterns
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Penumbra: Black Plague
Unknown layouts, scares, and patrols on a blind run
Vintage Story
World generation and ore veins are hidden and randomised
Vintage Story leans a little harder on optimization, though the gap is small.
Penumbra: Black Plague
Physics puzzles and evasion routes are fully solvable
Vintage Story
Metallurgy progression and agriculture cycles are deeply systematic
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.