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
Expanding a self-sufficient alien colony by solving atmosphere, power, and resource chains under scripted threats.

Optimization · Pure Optimization
Designing a functional prison where security infrastructure and inmate need management prevent catastrophic failure.
Aven Colony leans Optimization (Pure Optimization); Prison Architect leans Optimization (Pure Optimization).
Prison Architect leans a little harder on execution, though the gap is small.
Aven Colony
City management UI has no twitch dimension
Prison Architect
Layout design is deliberate; no twitch demands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Aven Colony
Alien threats are scripted with no player-modelling behaviour
Prison Architect
Prisoner behaviour is scripted around needs and contraband rules
Aven Colony leans a little harder on variance, though the gap is small.
Aven Colony
Landing site resources and alien attack timing carry moderate RNG
Prison Architect
Riots and smuggling attempts introduce meaningful hidden threats
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Aven Colony
Colony expansion, air quality chains, and tech routing are the solvable core
Prison Architect
Guard routing, cell ratios, and utility networks are deeply solvable
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.