BTD 6 Map
Accurate as of Jul 10, 2021. Each tier represents the minimum cost of towers needed to beat that map. If maps are on the same tier, the map on the left most is the easiest. Source: https://docs.google.com/spreadsheets/u/0/d/1bK0rJzXrMqT8KuWufjwNrPxsYTsCQpAVhpBt20f1wpA/htmlview#
Credit to https://bloons.fandom.com/wiki/Tracks for the images.
