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 · Practiced Mastery
Nintendo's daily mental-workout collection of arithmetic, reading, and memory drills.

Optimization · Practiced Mastery
Action-RPG combat where the panel-grid loadout puzzle matters more than reflexes.
Brain Age: Train Your Brain in Minutes a Day! leans Optimization (Practiced Mastery); Kingdom Hearts 358/2 Days leans Optimization (Practiced Mastery).
Kingdom Hearts 358/2 Days leans a little harder on execution, though the gap is small.
Brain Age: Train Your Brain in Minutes a Day!
Fast writing and speech input under time pressure
Kingdom Hearts 358/2 Days
Real-time keyblade combat with modest timing demands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Brain Age: Train Your Brain in Minutes a Day!
No opponent
Kingdom Hearts 358/2 Days
Heartless and bosses run fixed patterns
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Brain Age: Train Your Brain in Minutes a Day!
Problem sets are randomly drawn but simple
Kingdom Hearts 358/2 Days
Loot drops add minor randomness to gearing
Kingdom Hearts 358/2 Days leans a little harder on optimization, though the gap is small.
Brain Age: Train Your Brain in Minutes a Day!
Mental arithmetic shortcuts and practice drive scores
Kingdom Hearts 358/2 Days
The panel grid system rewards careful build planning
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.
full breakdown
Brain Age: Train Your Brain in Minutes a Day! →
full breakdown
Kingdom Hearts 358/2 Days →