I love when games combine different skills. This game focuses on counting and fine motor skills, but can also focus on colors if you add a color die.
You'll need Duplos (or Megablox or Legos, or even wooden blocks,) a number die, and possibly a color die if you want to add that element to the game.
Roll the die, count the dots (a jumbo die would be great, but isn't necessary), then add that number of Duplos to your tower. If playing with a color die as well, you would need to add the number of the correct color. The person with the tallest tower wins.
By placing the Duplos at the opposite end of the room from where you are tossing the die, you can add some exercise to the game as well.
Many children, especially boys, learn much better by being active. This is a great example of how you can achieve learning while mixing in physical activity.
Another extension would be to cover the dots with numerals written on Post It notes - this could extend the game well in to the teens, though it may be hard to find enough Duplos!