Rainbow Flow: free Pride Month line puzzle game

What is Rainbow Flow?

Eight boards of numbered, coloured dots, from a 5×5 warm-up to a 7×7 grand finale with eight colours. Draw one line between each pair, never crossing another, and cover every square to paint the whole board with a rainbow. Each board has exactly one solution.

Rainbow Flow is a free logic puzzle for Pride Month, the June celebration of LGBTQ+ people, history and community. Each board holds pairs of numbered dots in the colours of the rainbow flag. Your job is to draw one line between the two dots of each colour so the lines never cross and, together, cover every square of the board.

There are eight boards, from a 5×5 warm-up with four colours to two 7×7 finales with eight. Every board has exactly one solution, checked by a solver, so there's always a clean answer to find. Drag with a finger or mouse, tap square by square, or play entirely with the keyboard.

At a glance

Category

Seasonal

Difficulty

Medium

Play time

3–5 min

Price

Free, in your browser, sign-up optional

How to play

Join the pairs

Draw a line from each dot to the other dot of its colour, moving up, down, left or right.

No crossings

Lines can't cross or share a square. Drawing over a line cuts it back.

Fill the board

A board is solved only when every pair is joined and every square is covered.

Score

150 per board with one stroke per colour, 10 less per extra stroke (up to 60), 50 less per hint, never below 30.

Scoring

Each of the 8 boards is worth 150 points when you draw every colour in one stroke. Each extra stroke costs 10 (up to 60) and each hint costs 50, never below 30 per board.

There are no lives or timer: every board can be finished, and your best total is kept in this browser.

What it trains

Spatial logic

Seeing how several lines can share one board without crossing.

Forced moves

Spotting corners, edges and dead ends where only one route works.

Planning ahead

Covering every square means thinking about the whole board, not just the shortest path.

Strategy and tips

Start at the edges

Dots near corners and edges have the fewest ways to go, so their lines are often forced.

Short pairs first

Two dots side by side or one square apart usually join in the obvious way.

Think about space

Every square must be covered, so a long empty corridor needs a line to pass through it.

Watch for dead ends

An empty square with only one free neighbour can never be filled: back up and reroute.

One stroke per colour

Finish a line in one go to keep the full 150 points for the board.

Why play Rainbow Flow?

Flow puzzles train spatial logic: seeing how shapes share a limited space, and spotting which moves are forced before you commit. Because every square has to be covered, you learn to reason about the whole board at once, not just the shortest path. It's the same habit as planning routes, layouts or schedules where every piece has to fit.

Frequently asked questions