Building comparison
head to head
Castlevania III: Dracula's CursevsMetal Slug 3
Neither is meaningfully harder - they pose close to the same test. The widest gap is variance, and it is a single point.
Castlevania III: Dracula's Curse
Execution · Pure Mechanics
The hardest NES Castlevania, with branching routes and switchable partner characters.
Metal Slug 3
Execution · Pure Mechanics
Arcade run-and-gun whose one-credit clears demand total spawn memorization and twitch.
Castlevania III: Dracula's Curse leans Execution (Pure Mechanics); Metal Slug 3 leans Execution (Pure Mechanics).
Castlevania III: Dracula's CurseMetal Slug 3
Axis by axis
Execution9 vs 9
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Castlevania III: Dracula's Curse
Brutal platforming and tight whip timing throughout
Metal Slug 3
one-hit deaths demand frame-level dodging and aim
Reads0 vs 0
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Castlevania III: Dracula's Curse
Scripted enemies and bosses only
Metal Slug 3
every enemy wave is scripted
Variance1 vs 2
Metal Slug 3 leans a little harder on variance, though the gap is small.
Castlevania III: Dracula's Curse
Minor enemy spawn wobble
Metal Slug 3
branching paths vary runs slightly
Optimization6 vs 6
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Castlevania III: Dracula's Curse
Partner choice, route branching, pattern memory
Metal Slug 3
memorizing spawns is the path to a one-credit clear
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.