Just finished an entry for #altctrlgamejam, had to share with you.
This is a game with an arduino based custom controller which fits like an arduino shield. The game is a vertical space shooter, when you drive a space battleship with 3 turrets and a special gun (star blaster). The custom controller is a 3d printed scale model replica of the ship in game. Apart from visual similarities, you can control the 3 turrets of the game simultaneously by turning the turrets of the scale replica controller. Also, you can fire the big gun at some point of the game. Also, you can get visual feedback from the game on the LED of the big gun on the controller.
Hardware : Arduino Uno, 3 Trimpots, LED, push button switch.
Software : Blender (Modeling, 3D printing), Unity, Uniduino, PlayMaker
Please rate it if you like.