head to head
Portal asks more than Goodbye Deponia, and the gap is execution.

Optimization · Pure Optimization
The trilogy finale trades puzzle complexity for narrative resolution, testing observation over deduction.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Goodbye Deponia leans Optimization (Pure Optimization); Portal leans Optimization (Pure Optimization).
Portal leans clearly harder on execution.
Goodbye Deponia
No physical demands on the player
Portal
Portal placement timing modest.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Goodbye Deponia
Scripted finale with no adaptive opponent
Portal
No adversary modeling player.
Goodbye Deponia leans a little harder on variance, though the gap is small.
Goodbye Deponia
Fixed narrative outcome with deterministic puzzles
Portal
Deterministic chambers; no randomness.
Portal leans a little harder on optimization, though the gap is small.
Goodbye Deponia
Closure-focused design eases puzzle density compared to predecessors
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.