Comes with 6 Bits, 20 Droid parts, 3 sticker sheets, and the free littleBits Droid Inventor appFree Droid Inventor app with step-by-step instructions and video tutorials guides kids through creating and customizing DroidsApp includes challenges to promote creativity and customization using household items 16+ activities and missions in the app to keep kids playing day after dayThe R2 Unit runs in Drive Mode, Force Mode, Self-Nav, and more Comes with 20 authentic R2 Unit sounds from the Star Wars films littleBits electronic blocks & Droid parts can be reconfigured in different ways to create brand-new Droids