Ply

What if a player could create emotions,  and the world that was generated around it, in addition to the soundtrack, were unique representations for that player? We have a ravine we want to cross. In this example, we could play”joy” to make a tree grow from a grass to take us to the other side, or we could also play “sadness”, so that it starts to rain, a river forms and we can swim across. Each player forms his experience/music/environment with his decisions.