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
A deep tower defense about popping waves of balloons with monkey towers.

Optimization · Pure Optimization
A visual programming puzzle that teaches algorithmic thinking through factory-floor instruction sequences.
Bloons TD 6 leans Optimization (Pure Optimization); Human Resource Machine 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.
Bloons TD 6
Placement clicks only; no dexterity ceiling
Human Resource Machine
Dragging instructions has no timing component
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Bloons TD 6
Bloon waves are fixed and known
Human Resource Machine
No opponent; purely computational puzzle
Bloons TD 6 leans a little harder on variance, though the gap is small.
Bloons TD 6
Wave order is deterministic; tiny targeting randomness
Human Resource Machine
Input data is fixed per level with no randomness
Human Resource Machine leans a little harder on optimization, though the gap is small.
Bloons TD 6
Tower placement, upgrades, and economy are near-solvable
Human Resource Machine
Writing minimal correct assembly-like programs to pass each input sequence
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.