Building comparison
head to head
Portal 2vsPrey (2017)
Prey (2017) asks more than Portal 2, and the gap is variance.
Portal 2
Optimization · Pure Optimization
A first-person puzzle game where seeing the solution is the whole skill.
Prey (2017)
Optimization · Pure Optimization
Immersive sim aboard Talos I where build and route choices dominate.
Portal 2 leans Optimization (Pure Optimization); Prey (2017) leans Optimization (Pure Optimization).
Portal 2Prey (2017)
Axis by axis
Execution3 vs 4
Prey (2017) leans a little harder on execution, though the gap is small.
Portal 2
Portal placement requires some precision but timing is lenient.
Prey (2017)
Wrench and Gloo timing modest.
Reads0 vs 1
Prey (2017) leans a little harder on reads, though the gap is small.
Portal 2
No opponent; puzzles are static.
Prey (2017)
Typhon AI scripted, not adaptive.
Variance0 vs 2
Prey (2017) leans clearly harder on variance.
Portal 2
Puzzles are deterministic with no randomness.
Prey (2017)
Mimics and resource spawns randomized.
Optimization9 vs 8
Portal 2 leans a little harder on optimization, though the gap is small.
Portal 2
Solving the puzzle's logic IS the entire game.
Prey (2017)
Neuromods, builds, station routing deeply solvable.
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.