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
An economic engine puzzle about balancing production chains across island settlements.

Optimization · Pure Optimization
Steampunk colony defense against scripted zombie waves.
Dawn of Discovery leans Optimization (Pure Optimization); They Are Billions leans Optimization (Pure Optimization).
They Are Billions leans a little harder on execution, though the gap is small.
Dawn of Discovery
Pausable building keeps hands out of the equation
They Are Billions
some pause-based defense placement
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Dawn of Discovery
AI traders and rivals follow predictable scripts
They Are Billions
zombie AI not adaptive
They Are Billions leans a little harder on variance, though the gap is small.
Dawn of Discovery
Island fertilities and resources are unknown until scouted
They Are Billions
map gen, swarm timing
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Dawn of Discovery
Production chains and population-tier economics are the entire game
They Are Billions
economy and wall placement 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.