A Typical Castle-Building Game, But...?

I downloaded it because they said it gives a lot of rewards (card points) like other games, but while it seems generous at first, resource acquisition is limited. Even with gold bars and other resources, it's hard to get the essential construction kits to upgrade the castle. The good thing is that if you get the kits, they provide all the acceleration support, so it doesn't take much time. Plus, the new account event gives you some kits, so upgrading isn't extremely difficult. I played casually for about a day and I'm already approaching level 20.