Something got in.
Your body is a whole world. Tonight it needs defending.
Two players works best on a tablet.
Pick an antibody.
It lasts for this run only. You can have up to three of each.
Where every blood cell is made.
ATP is earned by playing. It can't be bought.
Looks change nothing in play
Upgrades small, three levels each
Find the antibody that fits.
A vaccine lets your body practise on a harmless version of a germ first. Antibodies fit a germ's shape like a key in a lock: drag the antibody with the matching tip onto the germ.
Test what you know.
Take a breath.
P or Esc to keep playing.
Everyone you have met.
Clear every virus. Save the neurons.
White Blood Cell
Swallows a virus whole the moment it touches one. But viruses can see it coming — and they run.
T Cell
Viruses ignore it. Sneak up, press Signal, and every virus nearby freezes — and the neurons get a shield.
Killer T Cell
The brain is safe.
Make it comfortable.
Designed by Deone and Marvien.
Everything here began on one sheet of paper: the two defenders, the villains, the four places in the body, and the story.
The game was built from their design. Every fact in it is meant to be true; if one is ever wrong, that is a mistake to fix. The pictures and the sounds are all drawn and made while you play. Typefaces: Fraunces and Manrope.