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
Quiet side-scrolling journey piloting a land-ship across a dried-out sea.

Optimization · Pure Optimization
Open-ended puzzles testing vocabulary-driven creative problem-solving more than any reflex.
FAR: Lone Sails leans Optimization (Pure Optimization); Scribblenauts Unlimited leans Optimization (Pure Optimization).
FAR: Lone Sails leans a little harder on execution, though the gap is small.
FAR: Lone Sails
Light platforming and timely lever pulls
Scribblenauts Unlimited
Typing words is the only physical demand
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
FAR: Lone Sails
No opponent of any kind
Scribblenauts Unlimited
Puzzle NPCs are static requests, not minds
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
FAR: Lone Sails
Mostly fixed obstacles, minor unknowns first run
Scribblenauts Unlimited
Puzzles are visible; nothing meaningful is hidden
Scribblenauts Unlimited leans a little harder on optimization, though the gap is small.
FAR: Lone Sails
Fuel management and ship-routine efficiency are the game
Scribblenauts Unlimited
Finding objects that satisfy puzzle constraints is creative problem-solving
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.