Yam The Killer Potato For Windows - Version 1.7.3 Yam - The Killer Potato. Take on the role of the fearless agent, Yam. Yam's mission is to infiltrate the various enemy bases around his homeworld and rescue as many MIAs as possible. Yam is a solider in the Potato Army. Many years ago the Potatos' Homeworld was invaded by a race of symbiotic cybernetic organisms. Since then the Potatos have faced a lifetime of war. Recently the Potato Army has decided to fall back, regroup and change their offensive strategy. But some soliders did not regroup. They were marked as Missing In Action and left. However one solider was not happy with this arrangement. Yam made it his mission to go out and "Bring Our Boys Home". There had been enough loss of life already and Yam wanted to bring back as many soliders as possible, even if he died trying.