Using EVERY 4th Tier Upgrade Challenge! (Bloons TD 6)

Using Every 4th Tier Upgrade Challenge! Bloons TD 6 / BTD6 - the x rounds x tier towers challenge returns but with a twist! This time, all paths of each tier 4 tower must be used in a round. Here's my solution to this interesting challenge.

This is my series of Bloons TD 6 strategy, gameplay, guides, walkthroughs, or whatever it may be. Likes and comments are appreciated, and subscribe to catch my future videos!

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