It's easy to play in my spare time

Basically, it's a city-building game where you let it idle to collect coins → then use the collected coins to upgrade facilities. Since you only need to launch it and play a little in your spare time, you can play at your own pace and it's stress-free. I've only played the first stage so far, so I don't know beyond that, but there are no forced ads at the moment. It's great that you can play without stress, as the ads that appear are optional, like doubling your rewards, and you can choose whether to watch them. I recommend watching ads to double your offline rewards and when you fail at the card flip. Other than that, it's up to you... Is it just me, or do the characters look a bit like they're from a certain famous magic movie? lol