Building comparison
head to head
No Man's SkyvsPortal
No Man's Sky asks more than Portal, and the gap is variance.
No Man's Sky
Optimization · Pure Optimization
Procedural space exploration sandbox with crafting depth.
Portal
Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
No Man's Sky leans Optimization (Pure Optimization); Portal leans Optimization (Pure Optimization).
No Man's SkyPortal
Axis by axis
Execution3 vs 4
Portal leans a little harder on execution, though the gap is small.
No Man's Sky
Light shooter and flight inputs
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.
No Man's Sky
Mostly solo, sparse PvP
Portal
No adversary modeling player.
Variance3 vs 0
No Man's Sky leans clearly harder on variance.
No Man's Sky
Procedural planets and loot
Portal
Deterministic chambers; no randomness.
Optimization8 vs 8
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
No Man's Sky
Base, freighter, expedition progression
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.