Aisle 23No. 376 of 460
Splashery
Red Blood Cell
220,000 small parts. Assembled in your browser.
Empty. Now look down.

Swipe across the pack to tear it open.
Press and hold. It pulls itself together.
Let go to drop it.
It stays in its pack here. The Playground has the rest.
Tiny World · Built from a recipe
Red Blood Cell
Red blood cells carry oxygen from the lungs to every part of the body.
Play with it in the Playground
How to play
Tap it to curl it into a sickle shape and back.
Toy facts
- Item
- No. 376 of 460
- Shelf
- Aisle 23, Tiny World
- Kind
- Built from a recipe
- Small parts
- 220,000
- Sound
- Yes
- Hands-on
- Yes
- Batteries
- None
- Assembly
- It does that itself
- Licenses
- Own work (made in the page)
- Price
- $0.00
Small parts are the splats in its usual build on a computer. A phone may draw fewer.
Its controls
| Control | Kind | Range | Start |
|---|---|---|---|
| Sickle and relax | Tap | ||
| Sickle | Button | ||
| Color | Color | #d8323f |
About it
Red blood cells carry oxygen from the lungs to every part of the body. Each is a soft disc, dented in on both sides, that bends to squeeze through the tiniest blood vessels. A mature human red blood cell has no nucleus and is packed with hemoglobin, the red protein that holds the oxygen.
Tap it and it sickles: it stretches and curls into a stiff crescent, then relaxes back into a disc. This happens in sickle cell disease, where a change in the hemoglobin makes cells stiffen when oxygen is low. The body makes millions of new red blood cells every second.
Details
- Splats
- Opens at 200,000 at Mid Detail, 60,000 at Low, and up to 320,000 at Max
Sources and credits
Made in Splashery. Its code is MIT.



