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

Optimization · Systems & Chaos
A colony sim where the storyteller's randomness tests your designed defenses.

Optimization · Pure Optimization
Ambitious X-COM entry defending a single city with real-time tactical combat.
RimWorld leans Optimization (Systems & Chaos); X-COM: Apocalypse leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
RimWorld
Pausable, no input precision required.
X-COM: Apocalypse
Optional real-time mode adds slight dexterity.
RimWorld leans a little harder on reads, though the gap is small.
RimWorld
Storyteller AI is randomised, not adaptive to you.
X-COM: Apocalypse
Alien behavior is systematic, not adaptive.
RimWorld leans a little harder on variance, though the gap is small.
RimWorld
Raids, weather, and pawn traits are heavily random.
X-COM: Apocalypse
Hidden enemies and random raids drive uncertainty.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
RimWorld
Colony layout, work priorities, and defenses solvable.
X-COM: Apocalypse
City politics, economy and tech routing decide the war.
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.