Castle Digger

Built with love. Free to play. No strings attached.

What's this all about?

Castle Digger is a cozy incremental game about building your underground castle while uncovering the mysteries below. Send adventurers on quests, expand your fortress with new rooms, and dig deeper into the unknown. Start active, settle into idle — unlock new mechanics and watch your kingdom grow at your own pace. In time, you might even discover what happened to this world. Sound interesting? Give it a try!

• Is Castle Digger really free?

  Yes! Castle Digger is 100% free. Why? Because I want it so.

• Where is the item shop?

  There is no F2P item shop — and there never will be.

• Where are the ads?

  There aren’t any ads — and there never will be. If you disable your ad blocker for this website now, you’ll usually get a performance boost of around 30%, with no downside.

• What type of game is Castle Digger?

  Castle Digger is an idle and incremental game where you rebuild an underground empire after a cataclysmic event. It focuses on strategic resource management, base-building and hero development.

• Do I need to download anything?

  No download required! Castle Digger is a browser-based game that you can play directly in your web browser. Click here to play.

• Do I have to register an account?

  No. There is no account registration. When you start a new game, you will be handed a key to your castle. Take care of that key. Maybe even create a bookmark (the key is in the URL) or write it down on a piece of paper.

• I have lost my castle key.

  Time to start over. :-(
  
  Try checking your browser history - the code is in the URL.

• Cookies?

  No cookies.

• Where is the play button again?

  Here you go.