Intestinvaders 1.0.4 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. The software belongs to Games. This free software for Mac OS X was originally designed by Python.
From the developer:
Intestinvaders is a OS X game in which, in humanity's utopian future, the ultimate form of sporting entertainment consists of racing miniaturised spaceships through the intestines of people from the past - in this case, the various Presidents of the USA.
You may want to check out more Mac applications, such as OneLapChallange, Extreme Unicorn Racing or XRC, which might be similar to Intestinvaders.