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
A co-op party puzzle where one player defuses a bomb others describe from a manual.

Variance · Systems & Chaos
A gothic narrative exploration game about flying a steam locomotive through haunted skies.
Keep Talking and Nobody Explodes leans Optimization (Systems & Chaos); Sunless Skies leans Variance (Systems & Chaos).
Keep Talking and Nobody Explodes leans a little harder on execution, though the gap is small.
Keep Talking and Nobody Explodes
Defusing under a timer punishes fumbling
Sunless Skies
Slow locomotive combat asks little of the hands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Keep Talking and Nobody Explodes
The bomb never adapts to you
Sunless Skies
Horrors and agents follow scripted storylets
Sunless Skies leans a little harder on variance, though the gap is small.
Keep Talking and Nobody Explodes
Random module combinations every bomb
Sunless Skies
Hidden ports, story branches and terror events
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Keep Talking and Nobody Explodes
Mastering the manual turns chaos into procedure
Sunless Skies
Trade routes and fuel economics are plannable
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.