How to Get the Secret to the 'Bloons Tower Defense 4' Expansion Track

Balloons contain other balloons, which are only released upon popping.

"Bloons Tower Defense 4 Expansion" is a tower defense game available at ninjakiwi.com. The goal of the game is to pop wave after wave of invading balloons before they reach the exit. To do this, you buy and place stationary dart-throwing monkeys, boomerang-throwing monkeys, mortars, and a variety of other "towers." As you pop balloons, you earn money to buy more towers and upgrade your existing ones. The advanced course features a Mayan-styled monkey temple with a secret weapon.

Instructions

1. Go to Bloons TD 4 Expansion (see Resources).

2. Start a new game. Select the advanced level, and set the difficulty to easy, medium or hard.

3. Progress through the levels game as you normally would. Deploy at least 40 towers and save up $30,000 at some point in the game.

4. Accept the offer to sacrifice 40 towers and $30,000 in order to activate the temple's secret weapon.

References

• Ninja Kiwi Blog - BTD4E secret

Resources

• Ninja Kiwi Blog - Beginner's Guide and Walkthrough
• Balloon Game Pop - General Guide
• Ninjakiwi: Bloons Tower Defense 4