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 · Pure Optimization
Zen sliding-droplet puzzler about clearing pearls in the fewest moves.

Optimization · Pure Optimization
Atmospheric sci-fi puzzler about swapping consciousness between your own clones.
Quell leans Optimization (Pure Optimization); The Swapper leans Optimization (Pure Optimization).
The Swapper leans a little harder on execution, though the gap is small.
Quell
Swipes only; no timing pressure
The Swapper
Light platforming; precision rarely gates progress
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Quell
No opponent exists
The Swapper
No opponent exists
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Quell
Fully deterministic boards
The Swapper
Deterministic rooms with no hidden state
Quell leans a little harder on optimization, though the gap is small.
Quell
Minimum-move sliding solutions are pure logic
The Swapper
Clone-placement puzzles have fixed solvable solutions
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.