Shrink through five scales of reality — from cat-size to microscopic. Discover how physics, survival, and the world itself transform when you're impossibly small.
What If You Were Tiny is a free interactive experience where you shrink through five scales of reality, from cat-size to microscopic. At each scale, you make choices about how to navigate, survive, eat, and communicate in a world that's become enormously different. Real physics annotations explain the square-cube law, surface tension, and more.
Explore 15 scenes across 5 scale levels. Each scene presents a vivid environment with CSS art and emoji illustrations showing familiar objects at enormous scale. Make choices that shape your adventure and discover how the laws of physics change as you shrink.
From cat-size down to microscopic. Each scale reveals new challenges and physics phenomena, from surface tension becoming dangerous to the square-cube law letting you lift 50x your weight.
Yes! All physics annotations are based on real science. The square-cube law, surface tension effects, and sound changes at small scales are all scientifically accurate.
About 3-5 minutes to explore all 15 scenes across 5 scale levels. You can replay to make different choices and discover new scenarios.
Fossil Dig · Terrarium · Ecosystem Builder
Last updated: April 2026