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
Long-horizon empire optimization over a randomly dealt but mappable map.

Optimization · Pure Optimization
Colonize Mars by stacking dome layouts and supply chains.
Sid Meier's Civilization leans Optimization (Pure Optimization); Surviving Mars leans Optimization (Pure Optimization).
Surviving Mars leans a little harder on execution, though the gap is small.
Sid Meier's Civilization
Turn-based clicking, zero physical demand
Surviving Mars
pausable, no reflex
Sid Meier's Civilization leans a little harder on reads, though the gap is small.
Sid Meier's Civilization
AI leaders follow mappable personalities, not adaptive minds
Surviving Mars
no adversary
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Sid Meier's Civilization
Map generation and combat rolls hide early information
Surviving Mars
disasters, sponsor traits
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Sid Meier's Civilization
Tech routing, expansion and economy are deeply solvable
Surviving Mars
dome layouts and supply chains
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.