Building comparison
head to head
PortalvsThe Alters
Neither is simply harder - they are hard in different places. Portal demands more execution; The Alters demands more variance.
Portal
Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
The Alters
Optimization · Pure Optimization
Scheduling scarce time and resources across a base run by copies of yourself.
Portal leans Optimization (Pure Optimization); The Alters leans Optimization (Pure Optimization).
PortalThe Alters
Axis by axis
Execution4 vs 1
Portal leans clearly harder on execution.
Portal
Portal placement timing modest.
The Alters
Third-person walking and menus, no twitch 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.
The Alters
No adaptive opponent, only systems and story beats
Variance0 vs 4
The Alters leans clearly harder on variance.
Portal
Deterministic chambers; no randomness.
The Alters
Unscouted events and alter reactions surprise first runs
Optimization8 vs 8
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Portal
Pure puzzle-solving optimization.
The Alters
Time, resource and crew scheduling under deadlines is the game
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.