head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Execution · Pure Mechanics
A rhythm racer that turns any music file into a reflex puzzle track.

Execution · Pure Mechanics
A twin-stick mech shooter testing aiming and dodging through enemy waves.
Audiosurf leans Execution (Pure Mechanics); Gatling Gears leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Audiosurf
Lane-switching to the beat tests reaction speed.
Gatling Gears
Twin-stick aiming and dodging under fire dominate
Gatling Gears leans a little harder on reads, though the gap is small.
Audiosurf
No opponent.
Gatling Gears
Enemy waves are scripted, not adaptive
Gatling Gears leans a little harder on variance, though the gap is small.
Audiosurf
Track generated from song, then fixed.
Gatling Gears
Enemy spawns and drops add mild chaos
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Audiosurf
Block-matching color strategy learnable per song.
Gatling Gears
Weapon upgrades and positioning reward planning
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.