Flood is one of Simon Tatham's portable puzzles. The board is a grid of coloured squares. The area in the top-left corner is yours, and each move changes its colour to the colour of a square you pick, swallowing every neighbouring square of that colour.
The aim is to turn the whole board one colour within the move limit. It is quick to learn and easy to play badly, which is what makes a good run satisfying. Every board is generated fresh and there are several sizes.
Controls
Click or tap any square of the colour you want next; your area in the top-left corner changes to that colour. The menu bar has New game,…
Genre
Puzzle, Logic, Colours, Touch
Price
Free — no account, no download, nothing to install
Tips for Flood
Pick the colour that swallows the most squares, but look one move ahead too.
Head for the middle of the board early; it opens up the most choices.
Count the colours left: finishing a colour completely is often worth a move.