By far the greediest game I've ever played. Over 1 million silver to upgrade a single artifact to max level and that's IF you don't fail 25+ times in the process. Yet you only get a couple thousand silver for selling an artifact or beating a dungeon. 40 gems only get you 80,000 silver and that's good for Jack nothing. It costs you silver to remove artifacts which isn't even a thing in most games. The epitome of "f you pay me." Trash. Not fun; just a cash grab. Don't waste your time.