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

Optimization · Practiced Mastery
The 1986 original that defined exploration-driven, secret-riddled platforming.

Optimization · Practiced Mastery
A comedic 2D stealth adventure parodying Metal Gear, built on learnable patrols and puzzles.
Metroid leans Optimization (Practiced Mastery); UnMetal leans Optimization (Practiced Mastery).
Metroid leans a little harder on execution, though the gap is small.
Metroid
stiff NES jumps and tough enemy contact
UnMetal
Light stealth timing and boss dodging
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Metroid
creatures follow fixed movement
UnMetal
Guards follow fixed patrol scripts
Metroid leans a little harder on variance, though the gap is small.
Metroid
unmarked secrets and bombable blocks hide the map
UnMetal
Some unknown-first-time gags, mapped on replay
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Metroid
route and item knowledge transforms the game
UnMetal
Routes, item puzzles, and scripted bosses are solvable
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.