Building comparison
head to head
Scrap MechanicvsTerraria
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.
Scrap Mechanic
Optimization · Pure Optimization
A creative engineering sandbox where machines built from logic and bearings do the heavy lifting.
Terraria
Optimization · Pure Optimization
A 2D sandbox where preparation and gear tiering carry boss fights.
Scrap Mechanic leans Optimization (Pure Optimization); Terraria leans Optimization (Pure Optimization).
Scrap MechanicTerraria
Axis by axis
Execution3 vs 4
Terraria leans a little harder on execution, though the gap is small.
Scrap Mechanic
Basic movement and combat; building is unhurried.
Terraria
Boss fights require dodging and aim under pressure.
Reads0 vs 0
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Scrap Mechanic
Robot enemies are scripted and predictable.
Terraria
Bosses use scripted attacks; no adaptation.
Variance3 vs 3
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Scrap Mechanic
Survival mode loot and world generation add some randomness.
Terraria
World seeds and loot drops randomized.
Optimization8 vs 8
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Scrap Mechanic
Logic gates, bearings and farm automation reward pure engineering.
Terraria
Gear progression and arena prep solve every boss.
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.