So... If I wrote a game based on events from a commercial, MMORPG, and used some media taken from the game, and used names (UNSURE IF THEY ARE REGISTERED TRADEMARKS) from that game, but I obtained permission from the publishers of the game who stated "As long as you maintain that all rights to our original content belongs to us", and I noted that the media remains the copyright of the publishers within a readme file within the game, is this okay?