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