RimWorld: Biotech is an extensive expansion that allows you to start families, raise children, create genetically modified colonists, and command an army of mechanoids. Players can have children naturally or artificially, take care of their upbringing, education and development, as well as accelerate their adolescence thanks to special growth tanks. The expansion introduces genetic engineering – you can combine and modify genes to create new breeds of people with unique traits and abilities. You'll also encounter factions of xenohumans, including immortal vampire sanguophages, who hide their power by feeding on the blood of others. A new element is the ability to create and control mechanoids – combat and work machines that help in combat, construction and production. However, beware of environmental contamination caused by toxic waste that can mutate plants, animals, and humans. Biotech is a combination of science, excitement, and survival that adds new depth and all-new gameplay possibilities to RimWorld.