Building comparison
head to head
PortalvsXenonauts
Neither is simply harder - they are hard in different places. Portal demands more execution; Xenonauts demands more variance.
Portal
Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Xenonauts
Optimization · Pure Optimization
Faithful X-COM successor managing a global war against alien invasion.
Portal leans Optimization (Pure Optimization); Xenonauts leans Optimization (Pure Optimization).
PortalXenonauts
Axis by axis
Execution4 vs 0
Portal leans clearly harder on execution.
Portal
Portal placement timing modest.
Xenonauts
Turn-based; no physical demands.
Reads0 vs 0
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Portal
No adversary modeling player.
Xenonauts
Alien AI follows consistent behavior rules.
Variance0 vs 6
Xenonauts leans clearly harder on variance.
Portal
Deterministic chambers; no randomness.
Xenonauts
Hit rolls and unseen alien positions punish certainty.
Optimization8 vs 9
Xenonauts leans a little harder on optimization, though the gap is small.
Portal
Pure puzzle-solving optimization.
Xenonauts
Air war, economy and squad doctrine decide campaigns.
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.