Good mobile games encourage you to spend, and make you feel good about purchases. Bad mobile games directly block progress behind spend gates without any grind alternatives. Call of Antia was built via a series of spreadsheets designed to squeeze the most out of its players. It is a beautiful game, but a poor player experience. I do not recommend getting invested in this one, unless you have hundreds of dollars available to dump into its systems. Waaaaaaaay too stingy.