Become the ultimate villain in Castle Doombad: Free to Slay, now available on iOS and Android! Grumpyface Studios invites you to defend your fortress from heroic invaders. Unlike typical games, you play as the antagonist, the nefarious Dr. Lord Evilstein, tasked with protecting your evil lair from pesky do-gooders.

Over 70 campaign levels challenge you to strategically deploy over 30 unique traps to thwart knights and other valiant foes. Upgrade your defenses and dominate the battlefield!

Personalize your evil lair with a wide array of "spoils"— wicked artifacts and ill-gotten gains. For a fresh challenge, try "Dr. Lord Evilstein's Roguevenge," a roguelite mode with randomly generated levels that tests your villainous skills.

Looking for more tower defense action? Check out our list of the best Android tower defense games!

Download Castle Doombad: Free to Slay for free on the App Store and Google Play. In-app purchases are available. A sequel, Castle Doombad 2: Muahaha!, is already under development!

Stay connected with the community on the official Facebook page, explore the official website for more details, or watch the video above for a sneak peek at the gameplay and graphics.