Building comparison
head to head
Portal 2vsZup! X
Portal 2 asks more than Zup! X, and the gap is optimization.
Portal 2
Optimization · Pure Optimization
A first-person puzzle game where seeing the solution is the whole skill.
Zup! X
Optimization · Pure Optimization
A minimal physics puzzle about chaining explosions to reach the goal.
Portal 2 leans Optimization (Pure Optimization); Zup! X leans Optimization (Pure Optimization).
Portal 2Zup! X
Axis by axis
Execution3 vs 3
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Portal 2
Portal placement requires some precision but timing is lenient.
Zup! X
Minimal dexterity to trigger explosions
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 2
No opponent; puzzles are static.
Zup! X
Solo - no opponent to model
Variance0 vs 1
Zup! X leans a little harder on variance, though the gap is small.
Portal 2
Puzzles are deterministic with no randomness.
Zup! X
Deterministic physics puzzles, no hidden randomness
Optimization9 vs 7
Portal 2 leans clearly harder on optimization.
Portal 2
Solving the puzzle's logic IS the entire game.
Zup! X
Finding the right explosion sequence is the puzzle
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.