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

Optimization · Pure Optimization
A meditative physics puzzle about plotting efficient absorption paths while spending mass wisely.

Optimization · Pure Optimization
A physics puzzle game about building wobbly towers and bridges from living goo balls.
Osmos leans Optimization (Pure Optimization); World of Goo 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.
Osmos
Gentle propulsion nudges need patience more than twitch precision
World of Goo
Placing goo balls needs only mild precision
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Osmos
Solo ambient drift - no adaptive opponent exists
World of Goo
No opponent exists
Osmos leans a little harder on variance, though the gap is small.
Osmos
Mote layouts vary slightly but physics are fully visible
World of Goo
Physics are visible and deterministic
World of Goo leans a little harder on optimization, though the gap is small.
Osmos
Planning efficient absorption paths while conserving mass is the game
World of Goo
Tower structure and goo economy are solvable per level
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.