How many 5×5 levels are there?

One hundred. Every level in the pack is linked on this page. Other sizes are separate packs with their own 100 levels.

How many colors does a 5×5 puzzle use?

Boards in this pack use 3 or 4 colors. The color count is why this size feels different. The pairing rule does not change.

Do I have to fill every cell?

No. The level is clear when every pair is connected. Empty cells can stay empty on this size and on the others.

5×5 Pipe Puzzles

These are the short boards. Twenty-five cells and 3 or 4 colors, so you can see every endpoint without hunting. Use them to learn the drag, the retract, and the hint before you care about planning.

They also fit a phone in one hand. The grid scales to the screen, and on this size the dots stay large enough to hit. There are 100 levels in the pack. Every one is linked below as a 5x5 puzzle.

The connect pipes page talks through the motion on this same size. This page is the full list.

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5×5 puzzle rules

Connect each pair of same-colored dots with a line.
The level is clear once every pair is connected. Empty cells can stay empty.
Lines cannot cross.

This pack is 25 cells and 3 or 4 colors. The clear is the same as on every other size: every pair joined by one line. Cells left over can stay empty.

Lines still cannot share a cell. A larger grid does not add diagonals, timers that fail you, or tiles to rotate.

How to play a 5×5 board

Start with any pair whose ends are already close.
Keep a path off the only exit of a corner endpoint.
Retract or undo as soon as a line sits on another color's corridor.
Stop when every pair is connected. Do not keep drawing to cover blank cells.

Pick a level from the full list below. The link text is the level name, such as 5x5 puzzle #1, and the address stays on this page. Stars on the card are that level's difficulty inside the 5×5 pack.

5×5 questions

How many 5×5 levels are there?: One hundred. Every level in the pack is linked on this page. Other sizes are separate packs with their own 100 levels.
How many colors does a 5×5 puzzle use?: Boards in this pack use 3 or 4 colors. The color count is why this size feels different. The pairing rule does not change.
Do I have to fill every cell?: No. The level is clear when every pair is connected. Empty cells can stay empty on this size and on the others.