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 · Pure Optimization
A creative engineering sandbox where machines built from logic and bearings do the heavy lifting.

Optimization · Pure Optimization
A first-person farming game about wrangling adorable slimes for plorts.
Scrap Mechanic leans Optimization (Pure Optimization); Slime Rancher leans Optimization (Pure Optimization).
Scrap Mechanic leans a little harder on execution, though the gap is small.
Scrap Mechanic
Basic movement and combat; building is unhurried.
Slime Rancher
Vacuum aiming is gentle.
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.
Slime Rancher
Slimes follow scripted behaviors.
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.
Slime Rancher
Plort prices and slime spawns vary.
Scrap Mechanic leans a little harder on optimization, though the gap is small.
Scrap Mechanic
Logic gates, bearings and farm automation reward pure engineering.
Slime Rancher
Ranch layout and economy reward planning.
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.