Building comparison
head to head
Metal Slug 4vsSpace Invaders Extreme
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.
Metal Slug 4
Execution · Pure Mechanics
A run-and-gun shooter where memorizing enemy patterns and precise dodging carries survival.
Space Invaders Extreme
Execution · Pure Mechanics
A remixed arcade shooter testing reflex precision and learned scoring-chain systems.
Metal Slug 4 leans Execution (Pure Mechanics); Space Invaders Extreme leans Execution (Pure Mechanics).
Metal Slug 4Space Invaders Extreme
Axis by axis
Execution8 vs 8
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Metal Slug 4
twitch dodging and shooting precision
Space Invaders Extreme
Rhythm-paced dodging and precise shots at high speed
Reads0 vs 0
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Metal Slug 4
fixed enemy waves, no adaptation
Space Invaders Extreme
Invader formations are scripted patterns
Variance1 vs 1
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Metal Slug 4
minor drop randomness
Space Invaders Extreme
Power-up rounds vary slightly between runs
Optimization5 vs 5
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Metal Slug 4
memorized patterns and routes solvable
Space Invaders Extreme
Chaining flicker patterns and fever modes is deep score tech
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.