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 percussive top-down rampage where a gorilla smashes through procedurally remixed levels.

Execution · Pure Mechanics
Raw arcade reflexes against accelerating swarms with mild spawn randomness.
Ape Out leans Execution (Pure Mechanics); Millipede leans Execution (Pure Mechanics).
Millipede leans a little harder on execution, though the gap is small.
Ape Out
Split-second grabs and throws under fire
Millipede
Trackball precision under swarming pressure is everything
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Ape Out
Guards react predictably
Millipede
Enemies follow fixed movement rules
Ape Out leans a little harder on variance, though the gap is small.
Ape Out
Procedurally shuffled layouts and enemy placements
Millipede
Spawn waves and DDT timing vary run to run
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Ape Out
Few systems beyond momentum and angles
Millipede
Mushroom-field management is a thin strategic layer
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.