Idle defense

Idle Defense is a hybrid idle clicker and tower defense game originally created for the CGAJAM competition. Inspired by titles like Cookie Clicker and Clicker Heroes, it combines the satisfying progression of idle gameplay with the tactical challenge of defending waves of enemies. With infinite waves and offline earnings, players can relax, upgrade, and return to see how far they’ve progressed — perfect for casual sessions or while testing other CGAJAM games.

Gameplay Overview

Your task is to defend your walls against endless waves of monsters. You can manually click to damage enemies or strategically build towers to automate your defense. Every 10 enemies defeated unlocks the next wave, with new enemies, higher rewards, and tougher challenges. Gold accumulates even while the game is closed, making progress continuous and rewarding over time.

How to Play Idle Defense

• Press SPACE or click the Play button to start a wave. Press again or click Pause to stop it.
• Click monsters to attack and earn gold.
• Buy towers in the Towers Panel and place them on the walls.
• Use the Tower Upgrades Panel to enhance your towers or unlock new ones.
• Level 0 towers are locked — increase their level to unlock them.
• Monsters that reach the maze exit reduce your total gold.
• Earn passive gold even when the game is closed.
• Scroll through wave levels with the mouse wheel.
• Right-click a tower to sell it for 50% of its original cost.

Tips & Tricks

• Combine clicking and tower placement for maximum efficiency.
• Revisit the game periodically to spend accumulated gold.
• Experiment with tower combinations for stronger defenses.
• Progression is infinite — see how far you can go!

Key Features

• Idle gold earnings even when offline.
• Strategic tower defense mechanics with upgrades.
• Progressive wave system with increasing difficulty.
• Playable directly in your browser — no installation needed.
• Designed for casual play while multitasking or exploring CGAJAM entries.

FAQ

What is Idle Defense?

Idle Defense is a mix between idle clicker and tower defense gameplay where you defeat infinite waves of monsters and earn gold automatically over time.

How do I start a wave?

Press the SPACE key or the Play button in the Wave panel to start spawning monsters. Press again to pause.

Do I earn gold while offline?

Yes! Gold continues to accumulate even if you close the game, letting you progress passively.

How do I unlock new towers?

Increase a tower’s level from 0 to at least 1 in the Upgrade Panel to unlock and deploy it in-game.

Can I sell towers?

Yes. Right-click on any tower to sell it for 50% of its original price.