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Improved Ice Tower is the first upgrade for the Ice Tower in BTD4. It increases the time bloons are frozen for, and increases the Ice Tower's attack radius. It costs $190 on Easy, $225 on Medium, $245 on Hard.
Trivia[edit | edit source]
- This upgrade combines Longer Freeze and Wide Freeze Radius, upgrades from earlier BTD games.
- It was later renamed to Enhanced Freeze in BTD5.
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