Legacy of Kain - Legacy of Kain From Wikipedia, the free encyclopedia Legacy of Kain is a series of video games developed by Crystal Dynamics and published by Eidos Interactive. Although the first game in the series was developed by Silicon Knights, Crystal Dynamics later won a legal battle over the rights to Legacy of Kain and continued the series without Silicon Knights. The idea behind Legacy of Kain was first conceived in 1993, but it took another three years before the first game appeared on the Sony PlayStation console.