Darwin's Soldiers is the first RP posted on the Gang of Five forum. It was originally concieved by Serris, and grew to include seven different authors. It was written from October 1st, 2008 to March 17, 2009 and was followed by two sequels, Survival of the Fittest and Disruptive Selection. It can be read here.
When terrorists invade a secret government facility dedicated to the creation of psionic and cybernetic experiments, surviving scientists and security guards band together to repel the intruders and survive.