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
A vault management sim about optimising dwellers, rooms, and resource loops.

Optimization · Pure Optimization
Tests lateral puzzle deduction to uncover a button panel's hidden endings.
Fallout Shelter leans Optimization (Pure Optimization); Please, Don't Touch Anything leans Optimization (Pure Optimization).
Please, Don't Touch Anything leans a little harder on execution, though the gap is small.
Fallout Shelter
Tapping menus only
Please, Don't Touch Anything
Pressing buttons takes no dexterity
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout Shelter
No opponent
Please, Don't Touch Anything
The panel is a fixed riddle, not a mind
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout Shelter
Incident spawns and lunchbox loot rolls
Please, Don't Touch Anything
Hidden endings are unknown information to uncover
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout Shelter
Dweller stats and room layout are fully solvable
Please, Don't Touch Anything
Decoding the panel's cryptic logic is pure puzzle-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.