Thanks neo1980 for posting this on our forum.
If you're itching to create the most unique armies ever found in a real-time strategy (RTS) game then download the Impossible Creatures trial version and play through three single-player missions, a tutorial and two "player vs. CPU" maps. The Sigma Combiner is also included, enabling you to create your own army of fearsome creatures that are generated by mixing and matching the various parts of two different animals. Fourteen animals are included in the trial version, while 50 different animals will be available in the retail product.
News source: Impossible Creatures website
Download: Impossible Creatures demo (285Mb)