head to head
Portal 2 asks more than Time Clickers, and the gap is execution.

Optimization · Pure Optimization
A first-person puzzle game where seeing the solution is the whole skill.

Optimization · Pure Optimization
Idle shooter where automated guns and well-timed prestige resets dissolve cube fortresses.
Portal 2 leans Optimization (Pure Optimization); Time Clickers leans Optimization (Pure Optimization).
Portal 2 leans clearly harder on execution.
Portal 2
Portal placement requires some precision but timing is lenient.
Time Clickers
Manual clicking helps early, then automates
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.
Time Clickers
Targets are inert cubes
Time Clickers leans a little harder on variance, though the gap is small.
Portal 2
Puzzles are deterministic with no randomness.
Time Clickers
Negligible randomness
Portal 2 leans clearly harder on optimization.
Portal 2
Solving the puzzle's logic IS the entire game.
Time Clickers
Weapon upgrades and time-warp resets drive everything
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.