Balloon Filler is a neat game from Concrete Software that forces a player to utilize their brains and dexterity. There's some strategy involved, but the gameplay mostly relies on a player's dexterity, timing, and ability to control the game board.
Balloon Filler provides the player with a blank game board. You have to then fill up two thirds of the space with balloons. Touch the screen and a balloon will immediately start to inflate. The trick though is to avoid the balls that are bouncing around the board.