Icy Chill

Icy Chill is a third-row Primary knowledge that gives every Ice Monkey +3 range and increases the radius of its freeze aura by the same amount. You need 5 Knowledge Points spent in the Primary tree plus Hard Tacks. It costs one point and no Monkey Money, and it unlocks So… Cold….

Think of it as a small, free version of the Larger Radius upgrade that every Ice Monkey gets automatically.

How it changes the game

The base Ice Monkey has a very small radius, so +3 is a meaningful percentage on low-tier towers:

• 0-0-0 to 2-x-x Ice Monkeys: the freeze blast covers noticeably more track, so more bloons get frozen per pulse. This is where you will see the biggest difference.
• Top path (Permafrost, Cold Snap, Ice Shards, Embrittlement): a bigger aura means more bloons are frozen and slowed each cycle. It combines well with So… Cold…, which makes Permafrost slow harder.
• Middle path (Enhanced Freeze, Deep Freeze, Arctic Wind, Snowstorm, Absolute Zero): a wider freeze catches more of each group, and Arctic Wind's slowing aura covers more track, which helps when it is used as a stall tower or to create ice platforms on water.
• Bottom path (Cryo Cannon and above): only the tower's targeting range grows. The size of each Cryo blast is not changed; that is what Big Cryo Blast does.

It does not add damage, pierce or attack speed. It stacks with Larger Radius, Monkey Village range buffs and hero range buffs.

Is it worth it?

Priority: good. Ice Monkeys are one of the most range-starved towers in the game, so a flat +3 matters more here than on almost any other tower. The bigger reason to buy it is the branch below: So… Cold…, Big Cryo Blast and Hypothermia all depend on it.

Compared with the other third-row Primary choices, Icy Chill is a solid middle pick. More Splatty Glue leads to the Glue Gunner side and More Cash, so it usually comes first, but Icy Chill is a better pure gameplay buff than Big Inferno or Budget Clusters for most players.

Where it works

Icy Chill is active in every mode where Monkey Knowledge is enabled, including Primary Only, Impoppable and Boss Events. It is turned off in CHIMPS and in challenges that disable knowledge. Many ice placements are built around exact radius values, so if you are practising a CHIMPS strategy, toggle knowledge off first. An Ice Monkey that reaches a corner with Icy Chill may miss it without.

Frequently asked questions

How much range does Icy Chill add?

+3 range for every Ice Monkey, and the freeze aura radius grows by the same amount.

Does Icy Chill make Cryo Cannon blasts bigger?

No. It increases the tower's range only. Blast size is increased by Big Cryo Blast.

Is Icy Chill the same as Larger Radius?

It works like a smaller version of it, and it stacks with the real Larger Radius upgrade.

What does Icy Chill unlock?

So… Cold…, which then leads to Big Cryo Blast and Hypothermia.