(another PICO-8 game from me)


Menu: Z to start game.

Game: Left-click to create white blood cells (while you have reserves which you can see in the bottom left corner).


Deploy the white blood cells near the red blood cells and they will automatically move to protect them from green bacteria invasions. Sometimes white blood cells get confused which red cell to protect when two are close together, so you might have to keep some in reserve to protect a lonely red cell in an emergency.

White blood cells and bacteria both change colour as their HP runs out. Red cells have their HP shown in orange just underneath them. Bacteria will lose HP even from hurting a red cell. Try to keep the four red cells you have alive as long as you can!


Last month's ant game made me want to play around more with 'thinking' things and the easiest way to do that is with more mouse input. I think I did a slightly worse job this time to be honest, but I didn't have as clear an idea of what I was going for. But it is fun to just blast new white blood cells at a problem.

Hope you have fun playing around with this silly thing. Don't use it as a reference in a biology paper please, I have NO idea what I'm doing.

Lexaloffle BBS thread: here.

#onegameamonth September 2018

Install instructions

The game should work great in the browser whether downloaded or not! Download the ZIP and put both files in the same folder, then double-click on 'blood.html'. It should open like a normal webpage.

The binaries just need to be downloaded and unzipped on the correct kind of computer - they should work from the unzipped folder with no extra messing. I'm just using the built-in PICO-8 binary export, but please let me know if something is weird with them. It is a new enough feature.

If you have PICO-8 and want to check out the game's code/etc. or just play it in the 'real thing', download either blood.p8 or blood.p8.png to your pico-8/carts directory, then load from within the game with 'load blood'.


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blood.p8 42 kB
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