To be honest I doubt the game will ever shut down - hopefully. Maybe the "ongoing development" will stop one day, but sustaining the site should (hopefully) not be the problem.
Größter Knecht aller Zeiten aka His Excellency aka President for Life aka Field Marshal Al Hadji aka Lord of All the Beasts of the Earth and Fishes of the Seas aka aka Conqueror of the Buzzerbeater Empire in Europe in General and Austria in Particular