In Ant Flow, you spend most of the time deciding which ant box is worth sending next. The ants clear matching blocks from the structure, but the useful colours are not always available right away. Picking a box too early can fill a slot with ants that have nowhere to go, leaving less room for the colours you actually need.
Choose an ant box that can reach matching blocks in Ant Flow, then send it into one of the five waiting slots. Once the ants have cleared their blocks, the freed space can reveal new colours and open the next part of the puzzle.
The five waiting slots are where Ant Flow becomes more than just simple colour matching. A box that cannot reach any available block is not just a slow choice; it can also block later choices.
Choosing a useful colour frees its slot once the ants have finished collecting. Choosing the wrong one leaves that space occupied while the structure stays almost unchanged.
This becomes harder when several colours are visible at once. One may be ready to clear immediately, while another is still buried under a layer of cubes. Looking at what can actually be reached is usually more useful than simply matching the colours you see.
Every level in Ant Flow has a picture hidden under the blocks. Clearing the outer cubes lets more of it show up, so you can see what the level is building toward while you play.
The picture is a nice part of the game, but it does not make the puzzle easier. You still need to manage the five slots, clear the right blocks, and avoid filling spaces with ants that cannot help. Once the last blocks are gone, the full picture is finally there.