Building comparison
head to head
FoundationvsPortal 2
Neither is simply harder - they are hard in different places. Foundation demands more variance; Portal 2 demands more execution.
Foundation
Optimization · Pure Optimization
Organic-grid medieval city-builder driven by zoning and chains.
Portal 2
Optimization · Pure Optimization
A first-person puzzle game where seeing the solution is the whole skill.
Foundation leans Optimization (Pure Optimization); Portal 2 leans Optimization (Pure Optimization).
FoundationPortal 2
Axis by axis
Execution1 vs 3
Portal 2 leans clearly harder on execution.
Foundation
no twitch
Portal 2
Portal placement requires some precision but timing is lenient.
Reads0 vs 0
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Foundation
no opponent
Portal 2
No opponent; puzzles are static.
Variance2 vs 0
Foundation leans clearly harder on variance.
Foundation
map terrain
Portal 2
Puzzles are deterministic with no randomness.
Optimization9 vs 9
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Foundation
zoning, supply chains, ratios
Portal 2
Solving the puzzle's logic IS the entire 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.