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 · Systems & Chaos
A survival adventure about a mother fox protecting cubs through ecological collapse.

Optimization · Practiced Mastery
A meta puzzle box testing curiosity and one-time discovery more than any repeatable skill.
Endling: Extinction is Forever leans Optimization (Systems & Chaos); Pony Island leans Optimization (Practiced Mastery).
Pony Island leans a little harder on execution, though the gap is small.
Endling: Extinction is Forever
Light stealth and chase inputs
Pony Island
Light arcade hopping segments with low demands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Endling: Extinction is Forever
Human hunters follow scripted routines
Pony Island
The devil's tricks are authored scripts, not adaptation
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Endling: Extinction is Forever
Food and danger spots shift night to night
Pony Island
Meta twists are hidden information that spend on first reveal
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Endling: Extinction is Forever
Territory routing and cub care are plannable
Pony Island
Code-tinkering puzzles have fixed discoverable solutions
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.