Tree of Savior, despite its numerous problems with gameplay, and lack of end-game, has one of the best stories I’ve ever seen. The story of the game is very well crafted, well detailed and interesting to follow.
You could use that and do an animation telling the story of the game. It could be something like animes based on games like Sword Art Online and Log Horizon.
It could help in the propagation of the game and bringing more people into, I believe that the most of the players would enjoy seeing their character battling and developing their story in each episode.
