A maze game sample by ULTIMA and I2C acceleration sensor. The program sketch is uploaded to

https://github.com/kodera2t/ULTIMA_SAMPLE/blob/master/ULTIMA_MAZE2.ino , which works for ULTIMA or Zero Color2 or ULTRA Zero Color (ULTRA Zero needs I2C bus soldering)

, and you can buy ULTIMA at https://www.tindie.com/products/microwavemont/ultima-a-full-functioned-arm-based-board/

or Zero Color 2 at

https://www.tindie.com/products/microwavemont/zero-color-2/