Building comparison
head to head
Kerbal Space ProgramvsPortal
Kerbal Space Program asks more than Portal, and the gap is variance.
Kerbal Space Program
Optimization · Pure Optimization
Rocket engineering sandbox about orbital mechanics.
Portal
Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Kerbal Space Program leans Optimization (Pure Optimization); Portal leans Optimization (Pure Optimization).
Kerbal Space ProgramPortal
Axis by axis
Execution5 vs 4
Kerbal Space Program leans a little harder on execution, though the gap is small.
Kerbal Space Program
Manual piloting, docking precision
Portal
Portal placement timing modest.
Reads0 vs 0
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Kerbal Space Program
No adaptive opponents
Portal
No adversary modeling player.
Variance2 vs 0
Kerbal Space Program leans clearly harder on variance.
Kerbal Space Program
Light reentry and physics variance
Portal
Deterministic chambers; no randomness.
Optimization10 vs 8
Kerbal Space Program leans clearly harder on optimization.
Kerbal Space Program
Rocket design, delta-v budget, mission planning
Portal
Pure puzzle-solving optimization.
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.