The familiar loop
Swap-based match-three starts with neighbours.
In a common swap-based match-three game, the player exchanges two adjacent tiles to form a horizontal or vertical group of three or more matching colours. The value of a move comes from the match it makes, the tiles that fall after the clear and any cascade that follows.
For example, the official Candy Crush Jelly Saga beginner guide says that, in that game, swapping two candies to make a horizontal or vertical line of three or more of the same colour makes them vanish and lets new candies fall.
The Not Before Bed 01 loop
Slot decisions start with who can leave.
Not Before Bed 01 does not ask you to swap tiles. You choose from the awake, open little monsters. The chosen monster enters one of a limited number of collection slots and automatically gathers blocks of its colour; after collecting three, it leaves and frees the slot. A choice can also open adjacent monsters.
The useful questions change: which colour can fill soon, how long will this choice occupy a slot, and which neighbouring option opens next? Looking only at the colour in front of you can leave too little room for the following move.
Two loops, side by side.
| What to watch | Swap-based match-three | Not Before Bed 01 |
|---|---|---|
| Player action | Swap two adjacent tiles | Choose one currently available monster |
| How colours match | The swap creates a group of three or more | The monster collects matching blocks and leaves after three |
| Main constraint | Board position, legal swaps and the resulting drop | Limited collection slots, monster availability and colour supply |
| Typical question | Which swap makes a useful match or cascade? | Which monster can leave soon and keep room for the next choice? |
Both loops use the intuition of completing colours. Swap-based play changes neighbouring positions on the board; Not Before Bed 01 places the choice on monsters, colour supply and the slots still available.
Illustrative position
Two empty slots, three open monsters.
Suppose blue can collect three blocks and leave immediately, while orange can collect only one and must stay. Choosing blue returns its slot after resolution; choosing orange keeps one occupied. That example shows why “can this colour fill soon?” can matter more than simply taking a visible colour.
Boundary: this example follows the real rules, but it is not the state shown in the Level 77 screenshot or a guaranteed opening.
Sources
Rules and references.
Floor 2½, developer of Not Before Bed 01. Rules checked 20 September 2026.
- Official Candy Crush page: “Switch and match your way through thousands of levels.”
- Official Candy Crush Jelly Saga help: that game’s explanation of swapping, matching three in a line, clearing and falling candies.
- Not Before Bed 01 game guide: this game’s monster selection, colour collection and limited-slot rules.