head to head
Arkanoid: Doh It Again asks more than Half-Life 2, and the gap is variance.

Execution · Pure Mechanics
A reflex test of paddle precision against accelerating ball physics.

Execution · Pure Mechanics
Landmark FPS built on physics puzzles and tight gunplay.
Arkanoid: Doh It Again leans Execution (Pure Mechanics); Half-Life 2 leans Execution (Pure Mechanics).
Arkanoid: Doh It Again leans a little harder on execution, though the gap is small.
Arkanoid: Doh It Again
Paddle precision under accelerating ball speed is everything
Half-Life 2
Gravity gun and shooting demand precision.
Half-Life 2 leans a little harder on reads, though the gap is small.
Arkanoid: Doh It Again
No opponent - bricks do not adapt
Half-Life 2
Combine AI scripted, non-adaptive.
Arkanoid: Doh It Again leans clearly harder on variance.
Arkanoid: Doh It Again
Power-up drops and ball angles add bounded randomness
Half-Life 2
Almost no randomness.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Arkanoid: Doh It Again
Brick-clearing order and power-up choices have known answers
Half-Life 2
Linear progression with no builds.
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.