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 1994 Sid Meier strategy game about building colonial economies and winning independence.

Optimization · Pure Optimization
Colonize Mars by stacking dome layouts and supply chains.
Sid Meier's Colonization 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 Colonization
Turn-based; hands irrelevant
Surviving Mars
pausable, no reflex
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Sid Meier's Colonization
Royal and rival AI behave on fixed schedules
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 Colonization
Random New World maps and native placement vary starts
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 Colonization
Production chains and liberty-bell timing are a solvable economy
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.