It is required to use this Codey Rocky device. If you don't have Codey Rocky, you can buy this device. Firstly, go to source code. Because you can only connect device on the source code. Live mode is required to play this project. mBlock 5.5.1 or below: Click the 'Connect' button if you're ready. mBlock 5.5.1 or above Click the 'Connect' button. But make sure you need to download mLink first. (If mLink was selected) If you refuse to download mLink or slow connections, Click the serial button ot bluetooth and select this device and connect it (If direct connection was selected) If you don't want to let Codey Rocky to fall into hazardous things, just take out Codey or place the Codey Rocky on the floor for your safety. Here is the list if you put numbers: 1 = Scissors 2 = Paper 3 = Stone Place the answer ONLY 'scissors', 'paper', and 'stone' or '1', '2', and '3'. Enjoy the project!