This was the project that I was running at the Hive library in Worcester at their STEAMfest event. It's written to work with a Makey Makey board and lumps of PlayDoh and a square of silver kitchen foil. Each "Whack" is triggered by the space, up arrow, right arrow, down arrow or left arrow keys. To play click the green flag and then whack and piece of PlayDoh.
2025 UPDATE: Now with improved graphics and sounds and the moles pop up and down a bit slower. The five mole hills are arranged in two rows, with the back containing 2 and the front containing 3. Working across the screen from the left to the right they are each linked to the following keys, space, up arrow, right arrow, down arrow and left arrow.