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.

Execution · Pure Mechanics
A 3D platformer whose joy lives in tight movement and capture-driven traversal.

Execution · Pure Mechanics
Tests frame-tight jump timing through fully memorisable obstacle sequences.
Super Mario Odyssey leans Execution (Pure Mechanics); The Impossible Game leans Execution (Pure Mechanics).
The Impossible Game leans a little harder on execution, though the gap is small.
Super Mario Odyssey
Precise platforming and capture-move tech ceiling.
The Impossible Game
One mistimed jump restarts the level - perfect inputs win alone
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Super Mario Odyssey
No adaptive opponents whatsoever.
The Impossible Game
Solo - nothing to predict
Super Mario Odyssey leans a little harder on variance, though the gap is small.
Super Mario Odyssey
Almost no randomness in level design.
The Impossible Game
Levels are identical on every attempt
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Super Mario Odyssey
Moon routes and movement tech learnable.
The Impossible Game
Memorising the jump sequence is half the climb
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.