head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Optimization · Pure Optimization
LucasArts adventure retracing the film's hunt for the Holy Grail.

Optimization · Pure Optimization
A fixed-solution puzzle adventure where finding the right inventory combination unlocks every obstacle.
Indiana Jones and the Last Crusade: The Graphic Adventure leans Optimization (Pure Optimization); The Secret of 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 Last Crusade: The Graphic Adventure
Clicks plus optional simple fisticuffs
The Secret of Monkey Island
Clicking inventory items demands no twitch skill whatsoever
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 Last Crusade: The Graphic Adventure
Guards follow fixed logic
The Secret of Monkey Island
No adaptive opponent; all puzzles are fixed and authored
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Indiana Jones and the Last Crusade: The Graphic Adventure
Puzzle answers hidden on first play
The Secret of Monkey Island
Some hidden items require exploration but solutions are invariant
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Indiana Jones and the Last Crusade: The Graphic Adventure
Dialogue routes and Grail-lore deduction
The Secret of Monkey Island
Correct item combinations and dialogue chains fully determine 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.
full breakdown
Indiana Jones and the Last Crusade: The Graphic Adventure →
full breakdown
The Secret of Monkey Island →