Guide not written yet. We add one after we've played the game. For now, this is the developer's own description.
Controls
Not listed by the developer.
About Defend the Castle
Fortify your kingdom in Defend the Castle! Strategically build and upgrade defenses with gold and wood to resist relentless enemy waves. Deploy cunning tactics with cannons and archers. Can you protect the King and let your stronghold stand the test of time?
Description supplied by the developer via GamePix.