Skull Tweak in Bloons TD 6 reaches its ultimate challenge in CHIMPS mode, where no continues, no income, no Monkey Knowledge, and no mistakes are allowed. The map’s skull-shaped layout, water areas, bridges, and line-of-sight blockers make precise tower placement and efficient use of available space essential throughout all 100 rounds. Success requires a carefully planned defense that can handle early-game pressure, scale through the mid game, and deliver reliable late-game damage against powerful MOAB-class bloons and fortified bloons.