About

SPERMAGEDDON is a 4-player party game you play with friends in your browser. Millions of candidates, one egg.

What is it about?

Each player controls a sperm and swims the real anatomical route (vagina, cervix, uterus, fallopian tube, egg) from start to finish. Hook onto each other to form a "sperm train", headbutt rivals and dodge white blood cells. Between levels, Dr. Leukocyte shares real biology facts.

The game explains biology with humour. There is no nudity or sexual content.

How do I play?

• No download or install: it runs in your browser.
• Play solo against bots, or with friends using a 4-letter room code.
• Start instantly as a guest. Save your account with Google, Discord or e-mail to keep your points, badges and league ranking.

Who makes it?

SPERMAGEDDON is an independent project developed by the SPERMAGEDDON team. For ideas, bug reports or partnerships, see the contact page.