head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Optimization · Pure Optimization
A broken-system RPG where influence manipulation and prestige class chaining produce dominant power spikes.

Optimization · Pure Optimization
Engineering precise gas, liquid, and power circuits to keep a subterranean colony alive indefinitely.
Knights of the Old Republic II: The Sith Lords leans Optimization (Pure Optimization); Oxygen Not Included leans Optimization (Pure Optimization).
Knights of the Old Republic II: The Sith Lords leans a little harder on execution, though the gap is small.
Knights of the Old Republic II: The Sith Lords
Pseudo-turn-based d20 system makes twitch irrelevant throughout
Oxygen Not Included
All inputs are build-order clicks; no twitch required
Knights of the Old Republic II: The Sith Lords leans a little harder on reads, though the gap is small.
Knights of the Old Republic II: The Sith Lords
Influence system uses scripted dialogue triggers, no adaptive opponent
Oxygen Not Included
No adversary of any kind exists in the colony
Oxygen Not Included leans a little harder on variance, though the gap is small.
Knights of the Old Republic II: The Sith Lords
Influence thresholds and hidden stat distributions create first-play unknowns
Oxygen Not Included
Asteroid seed and geyser placement carry meaningful but bounded randomness
Oxygen Not Included leans a little harder on optimization, though the gap is small.
Knights of the Old Republic II: The Sith Lords
Prestige class chaining and influence-stat transfer create near-broken optimization ceilings
Oxygen Not Included
Gas, liquid, and power engineering are essentially a solvable engineering 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.