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PART 1 GAME
THE SCALE LADDER
Smallest to largest
Tap the items below in order, starting with the smallest. Watch the real size get revealed as you go.
Tap the smallest item to begin.
CHALLENGE COMPLETE
🎉 You built the scale ladder!
+30 XP
From a single atom to a full-grown human — that's about ten billion times bigger, in just seven steps.