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
An elegant hex-grid logic puzzler that is always solvable by deduction alone, never guessing.

Optimization · Pure Optimization
A first-person factory builder that is pure logistics optimization.
Hexcells leans Optimization (Pure Optimization); Satisfactory leans Optimization (Pure Optimization).
Satisfactory leans a little harder on execution, though the gap is small.
Hexcells
Clicking hexes calmly; no physical test.
Satisfactory
Light platforming, no real mechanical ceiling.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Hexcells
No opponent exists.
Satisfactory
No adaptive opponent in the world.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Hexcells
Designed to need zero guessing; full information.
Satisfactory
Resource nodes are fixed once mapped.
Satisfactory leans a little harder on optimization, though the gap is small.
Hexcells
Minesweeper-style pure deduction is the entire game.
Satisfactory
Ratios, logistics, and factory layout are everything.
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.