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
Detective clue-hunting that converges as the paranormal rules get mapped.

Optimization · Practiced Mastery
Routing efficient digs and upgrades through a randomised mine.
Enigma of Fear leans Optimization (Systems & Chaos); SteamWorld Dig leans Optimization (Practiced Mastery).
SteamWorld Dig leans a little harder on execution, though the gap is small.
Enigma of Fear
Light dodge-and-shoot encounters with modest demands
SteamWorld Dig
Digging and platforming need modest precision
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Enigma of Fear
Monsters follow scripted paranormal rules
SteamWorld Dig
Enemies follow simple fixed patterns
Enigma of Fear leans a little harder on variance, though the gap is small.
Enigma of Fear
The mystery's hidden clues drive the investigation
SteamWorld Dig
Randomised mine layouts hide ore and hazards each run
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Enigma of Fear
Cross-referencing evidence converges to deducible answers
SteamWorld Dig
Upgrade routing and efficient dig paths drive progress
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.