Choose your skill level and start building defense towers. If you can destroy all of the balloons that appear on the screen, you will unlock stronger defense tools and you might reach the final level. Bloons Tower Defense 4 Expansion is provided to you by FunLand.com and is categorized into our strategy games. This game was played 267,221 times and currently has a rating of 4.52 out of 5.00 after 1,143 votes.