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 · Practiced Mastery
A gentle physics puzzle-platformer starring a creature made of unraveling yarn.

Optimization · Pure Optimization
A minimal physics puzzle about chaining explosions to reach the goal.
Unravel leans Optimization (Practiced Mastery); Zup! X leans Optimization (Pure Optimization).
Unravel leans a little harder on execution, though the gap is small.
Unravel
Gentle platforming and yarn-swing timing
Zup! X
Minimal dexterity to trigger explosions
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Unravel
No opponent
Zup! X
Solo - no opponent to model
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Unravel
Everything is visible and fixed
Zup! X
Deterministic physics puzzles, no hidden randomness
Zup! X leans a little harder on optimization, though the gap is small.
Unravel
Physics puzzles with discoverable intended solutions
Zup! X
Finding the right explosion sequence is the puzzle
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.