head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is variance, and it is a single point.

Optimization · Pure Optimization
LucasArts adventure sending Indy down three routes toward Atlantis.

Optimization · Pure Optimization
A puzzle-forward adventure testing creative lateral thinking against a fixed authored solution space.
Indiana Jones and the Fate of Atlantis leans Optimization (Pure Optimization); Return to Monkey Island leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Indiana Jones and the Fate of Atlantis
Pointing and clicking, light fistfight option
Return to Monkey Island
Modern hint system and relaxed interface remove all reflex demands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Indiana Jones and the Fate of Atlantis
No adaptive opposition
Return to Monkey Island
Entirely authored puzzles with no adaptive opponent
Indiana Jones and the Fate of Atlantis leans a little harder on variance, though the gap is small.
Indiana Jones and the Fate of Atlantis
Solutions hidden until reasoned out
Return to Monkey Island
Virtually no randomness; solutions are static
Indiana Jones and the Fate of Atlantis leans a little harder on optimization, though the gap is small.
Indiana Jones and the Fate of Atlantis
Three-path puzzle chains reward deduction
Return to Monkey Island
Lateral-thinking item puzzles require mapping cause and effect chains
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.