head to head
Super Hexagon asks more than Half-Life 2, and the gap is execution.

Execution · Pure Mechanics
Landmark FPS built on physics puzzles and tight gunplay.

Execution · Pure Mechanics
Terry Cavanagh's minimalist reflex gauntlet of rotating walls measured in seconds survived.
Half-Life 2 leans Execution (Pure Mechanics); Super Hexagon leans Execution (Pure Mechanics).
Super Hexagon leans clearly harder on execution.
Half-Life 2
Gravity gun and shooting demand precision.
Super Hexagon
Sub-second reactions at extreme speed, pure reflex ceiling
Half-Life 2 leans a little harder on reads, though the gap is small.
Half-Life 2
Combine AI scripted, non-adaptive.
Super Hexagon
No opponent, only walls
Super Hexagon leans a little harder on variance, though the gap is small.
Half-Life 2
Almost no randomness.
Super Hexagon
Pattern order randomized from a known set
Half-Life 2 leans a little harder on optimization, though the gap is small.
Half-Life 2
Linear progression with no builds.
Super Hexagon
Pattern vocabulary is small, reaction is everything
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.