4 people are born every second. The world is too small and there are too many idiots. Your mission is to prevent more assholes from being born!


  1. Left-Click on sperm to kill them
  2. Left-Click and drag to draw barriers. Barriers will dissapear after 10 hits or 10s. They have a maximum length and wont stop the quick sperm!
  3. Right click to drop bait. You can only have 1 bait at a time(lasts 10s). Bait will attract sperm.
  4. The egg has a shield around it. The shield will kill sperm over time but it will die after 100 hits.
  5. Once the shield is down the first sperm to hit the egg will make you lose.

Last as much as you can!


This game was created for Ludum Dare 38.

During a Ludum Dare, developers from around the world spend a weekend creating games based on a theme suggested by the community. Ludum Dare events take place every April, August and December.

The theme was "A small World". I approached the theme in two ways:

1. You are literally inside of a micro universe.

2. The world is getting too small for the population and you are attempting to fix this.



Install instructions

Unzip the file and play the executable. Enjoy!


BTIZip.zip 7 MB
Win32 10 MB
MacOS 13 MB
Linux 13 MB