This is The Simple Game System, a role-playing game of supreme simplicity, ease of play, and fast action. This game is distributed for free (see the Creative Commons license below for details).
These rules have been written without a lot of RPG jargon, but honestly they are still probably not terribly easy to read for a non RPG gamer. Design and discussion of this game takes place in this thread in the Workshop on the Basic Fantasy RPG forums.
This work is licensed under the Creative Commons Attribution-Share Alike 3.0 United States License.