Building comparison
head to head
Icewind Dale IIvsPortal
Neither is simply harder - they are hard in different places. Icewind Dale II demands more variance; Portal demands more execution.
Icewind Dale II
Optimization · Pure Optimization
A 3rd Edition ruleset combat puzzle where multi-classing and feat selection unlock dominant strategies.
Portal
Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Icewind Dale II leans Optimization (Pure Optimization); Portal leans Optimization (Pure Optimization).
Icewind Dale IIPortal
Axis by axis
Execution2 vs 4
Portal leans clearly harder on execution.
Icewind Dale II
Real-time-with-pause negates twitch requirements
Portal
Portal placement timing modest.
Reads1 vs 0
Icewind Dale II leans a little harder on reads, though the gap is small.
Icewind Dale II
Scripted enemy routines offer nothing to read or predict adaptively
Portal
No adversary modeling player.
Variance4 vs 0
Icewind Dale II leans clearly harder on variance.
Icewind Dale II
3E feat combinations and hidden enemy resistances create unknown-information layers
Portal
Deterministic chambers; no randomness.
Optimization9 vs 8
Icewind Dale II leans a little harder on optimization, though the gap is small.
Icewind Dale II
3rd Edition feat optimization and multi-class architecture dominate success
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.