GORE uses Open Game Content under the Open Game License and uniquely presents algorithms from 80s role-playing games to produce a generic role-playing game in the tradition of old-school games. GORE follows a trend that's been going on within the last few years in pen-and-paper games, that is, making material available to publishers to encourage competition and the contribution of high-quality gaming material to the market.
Goblinoid Games provides a free license to third-party publishers so that they can produce material that is compatible not just with GORE, but also with any of several old-school games using a percentile-based system with similar algorithms.