Building comparison
head to head
Half-Life 2vsSonic Free Riders
Neither is meaningfully harder - they pose close to the same test. The widest gap is variance, and it is a single point.
Half-Life 2
Execution · Pure Mechanics
Landmark FPS built on physics puzzles and tight gunplay.
Sonic Free Riders
Execution · Pure Mechanics
Motion-controlled racing where fighting the Kinect is half the physical test.
Half-Life 2 leans Execution (Pure Mechanics); Sonic Free Riders leans Execution (Pure Mechanics).
Half-Life 2Sonic Free Riders
Axis by axis
Execution6 vs 6
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Half-Life 2
Gravity gun and shooting demand precision.
Sonic Free Riders
Full-body Kinect steering is a physical (if unreliable) motor test
Reads1 vs 1
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Half-Life 2
Combine AI scripted, non-adaptive.
Sonic Free Riders
Human races add slight item-timing prediction
Variance1 vs 2
Sonic Free Riders leans a little harder on variance, though the gap is small.
Half-Life 2
Almost no randomness.
Sonic Free Riders
Item pickups inject kart-style randomness
Optimization3 vs 2
Half-Life 2 leans a little harder on optimization, though the gap is small.
Half-Life 2
Linear progression with no builds.
Sonic Free Riders
Track shortcuts are shallow knowledge
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.