Tbh even if the game is old and doesn't have updates, it can still bring players.
Just get in contact with a YouTuber and walla, you got yourself a fresh income.
Then we have to KEEP the players on, create bonds between players to make them start running the game on their OWN.
By running the game on their 'own', I mean creating gatherings and events with eachother.
ALSO YOU NEED A SYSTEM TO TURN GIGAS TO COINS!!!!