Boosters

Boosters are kept in your save: once used they are gone, and they do not refill each level. None of them is ever needed: every level has been cleared without them, and each level guide shows a solution that uses none. But they can rescue a run, and each one you use costs one of the three stars.

How to get boosters

Each booster unlocks on its own level and comes with 3 to start: Extra Slot on level 3, Grab on level 4, Machine Gun on level 8 and UFO on level 10. They don't refill on their own after that; when you play on a game portal such as CrazyGames or Poki, you can watch a short ad to get 1 of a booster you have run out of.

Extra Slot

Adds a sixth slot to the nest for the rest of the level. It is the gentlest fix and the best choice when you are one slot short, for example when a chained pair arrives and only one slot is free.

Grab

Lets you take a box from the second or third row of a column instead of the front. Use it to fetch a color that is exposed right now but stuck behind a box you don't want. It cannot take chained or locked boxes.

Machine Gun

Fires the moment you tap it: the gun sweeps the whole picture with 12 random shots, and every shot lands on a block that is still there. Each shot breaks an ordinary block outright, takes several bites off a number block, chips at a spider web or shatters ice. Every block it destroys is taken off a box of that colour, so its main use is to lighten a box that is stuck. A hole shot into the middle of the picture stays sealed: ants can only get in once the eating from outside reaches it, so holes near the parts already eaten pay off first.

UFO

Pick a slot, and the UFO lifts blocks of that box's color straight out of the picture, wherever they are, one for every ant the box still holds. It is the strongest fix for a jam: the box empties and leaves, and the holes it leaves often uncover the next layer.

Stars

Clear a level without boosters for three stars, with one booster for two, and with more for one. When the nest jams, the lose screen offers the boosters that would actually help.