IronBastion: a cat fortress defends a moonlit town from a crowd of adorable invaders.
Endless tower defense

IronBastion

Tiny invaders. One mighty cat fortress.

Build and upgrade your defenses to protect a moonlit cat fortress from waves of adorable invaders. IronBastion is an endless tower defense game you can play in your browser without signing in.

  • No sign-in required
  • Play in your browser
  • Internet connection required
  • Play in landscape
Play now

The game opens in a dedicated player. The first load may take a little time.

Build, upgrade, defend.

  1. Build your defenses

    Choose from four tower types and place them on unlocked building sites. Find the setup that works for your battlefield.

  2. Turn rewards into power

    Spend the rewards from defeated invaders to upgrade your towers. Strengthen your favorite defenses as the waves grow.

  3. Hold out for one more wave

    Protect the fortress from the incoming crowds and challenge yourself to reach a higher wave.

Always within reach

Give your fortress a home-screen icon.

Install IronBastion for quick access from your device. Your app icon opens this game directly.

Install from your browser menu

In Chrome or Edge, look for the install option in the browser menu. On iPhone or iPad, open Share and choose Add to Home Screen. Menu names and availability depend on your browser.

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