head to head
Styx: Master of Shadows asks more than Portal, and the gap is variance.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.

Optimization · Pure Optimization
Routing a fragile goblin through dense layered patrols using precise tool and ability economics.
Portal leans Optimization (Pure Optimization); Styx: Master of Shadows leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Portal
Portal placement timing modest.
Styx: Master of Shadows
Ledge-grab timing and kill animations need decent precision
Styx: Master of Shadows leans a little harder on reads, though the gap is small.
Portal
No adversary modeling player.
Styx: Master of Shadows
Orcs march fixed patrols; no adaptive opponent awareness
Styx: Master of Shadows leans clearly harder on variance.
Portal
Deterministic chambers; no randomness.
Styx: Master of Shadows
Checkpoint placements and gold locations are consistent per run
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.
Styx: Master of Shadows
Rope routing, amber-clone use, and distraction sequencing are optimisable
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.