Bugs! Screen Saver Enhancement Pack - description from Softdepia.com:
Life is a wonder whose complexity and beauty humans will fully comprehend no time soon. From the lowly bacteria whose ways are still enshrouded in mystery, to the unimaginable intricacies of multicellular organisms, life holds mysteries that boggle our minds and rouse in us fascination and awe. Now you can own a small piece of life's grandeur with the Bugs! Screen Saver. Designed with the latest research in artificial life, the Bugs! Screen Saver attempts to simulate the fundamental processes of life in a fun and highly visual way. It provides you a window into one of life's most intriguing aspects: the ability of organisms to adapt to change, to meet the demands of a constantly changing and highly competitive environment.
Bugs! Screen Saver Enhancement Pack is a "Free to try" program. You can download and try it for an evaluation period.