head to head
Invisible, Inc. asks more than Portal 2, and the gap is variance.

Optimization · Pure Optimization
Solving procedurally generated corporate heists through precise resource and power management under escalating alarms.

Optimization · Pure Optimization
A first-person puzzle game where seeing the solution is the whole skill.
Invisible, Inc. leans Optimization (Pure Optimization); Portal 2 leans Optimization (Pure Optimization).
Portal 2 leans a little harder on execution, though the gap is small.
Invisible, Inc.
Turn-based movement; no twitch demands whatsoever
Portal 2
Portal placement requires some precision but timing is lenient.
Invisible, Inc. leans a little harder on reads, though the gap is small.
Invisible, Inc.
Corporate guards patrol on scripted timers; no adaptive opponent
Portal 2
No opponent; puzzles are static.
Invisible, Inc. leans clearly harder on variance.
Invisible, Inc.
Procedural floor layouts and alarm escalation add significant run variance
Portal 2
Puzzles are deterministic with no randomness.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Invisible, Inc.
Power allocation, agent pairing, and escape routing are the core puzzle
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.