(A game I made with my daughter)
You will need. two six-sided dice, three different coloured pens. A sheet of graph paper.
Draw six to eight boxes on graph paper (using exsiting squares as a guide), Make this as symetrical as possible. Or, one player can make 6 to 8 boxes randomly (well spaced apart), and the other player my choose which side to start from.
Example:

Players take turns rolling two dice – then extending their line through squares (best to use two different coloured pens) by moving in one direction the number on one of their dice; and then turning left or right and moving the number on the other dice.
Players start from opposite sides of the page, and start form any square along their bottom edge.
Example: The red player rolled a 4 and a 6, and chose to move 6 and then turn right and move 4.

You don’t count the square you are currently in.. so a player in this position…

..would end up in this position after rolling a 4 and 3

Movement Rules
Players may not move along an existing line, they may cross over existing lines.
Players may move into a square that was already traversed, as long as you don’t move along an existing line.
Example: Blue is allowed to move through this box that red had already used…

When a player moves onto, or passes through a box, they fill it with their colour.
Example: Red moved through the box.

Who Wins?
Whoever claims the most boxes.
Losing the Game by getting stuck…
Watch Out! You can lose the game instantly by not being able to make a valid move!
This happens when the two dice you roll provides no way to avoid going along an existing line or hitting the border of the graph paper.
Example: Blue has rolled a 2 and a 5. There is no way to move without breaking a movement rule.

Example of completed game (it’s a tie!)

Tip: If you want to avoid a tie, add an odd number of boxes at the start of the game)