Frantic fun
The oxygen buttons are a little too close to each other though, imo.

Engage in a unique action puzzle game where you manage oxygen levels for red blood cells. Strategically attach oxygen molecules to create perfect cells and build high scores. Avoid incomplete cells to prevent your O2 gauge from depleting.
1.3.1
July 4, 2026
Fixed bugs.
Hemoglobin Hospital is an action puzzle game where players drag oxygen panels to attach oxygen molecules to red blood cells. The goal is to create 'perfect red blood cells' with four oxygen units each to build score chains.
You must ensure that incomplete blood cells do not pass through the screen, as this will decrease your O2 gauge. If the O2 gauge empties, the game is over.
Yes, when the O2 button blinks, you can tap it to launch an oxygen bomb, which replenishes all red blood cells on screen and makes them perfect.
Occasionally, oxygen capsules will float through the game. Tapping these will partially replenish your O2 bomb gauge. Collecting more of these will fill it back up.
Hemoglobin Hospital is available on iPhone, iPad, and iPod devices.
The game has an age rating of 4+, making it suitable for younger players.
The latest version of Hemoglobin Hospital was released on November 7, 2018.
No, Hemoglobin Hospital does not contain advertisements.