This game is brilliant for long car or plane trips; it only needs a few materials, and not a huge amount of concentration. I think my brother and I managed to consume an entire car journey from Adelaide to Wagga (a long way) with this game one holiday when we were about 6 and 8.
You will need:
Two or more players
Pens or pencils and A3 or Letter sized paper
You could use graph paper to save yourself from having to draw rows of dots, or you can download and print off some pdf files we prepared earlier:
short game (least amount of dots): A4 : US letter
medium game: A4 : US letter
long game: A4 : US letter
Each player takes it in turn to draw one horizontal or vertical line between two dots (no diagonals) anywhere on the grid. When a player draws the line that closes off a one unit square, it gets marked with their initial and it becomes their square:
They will then get another turn.
If the line completes two squares both become theirs, but they don’t receive another turn.
When all the squares are fenced off, the initials of each player are counted up and the winner of the game is the person with the most squares.