Codes, or sometimes called Promotional Codes, are a series of numbers or letters that may be input to receive something. To use a code, press Esc to go to your menu. Press the button labeled,"Input Code" and type in the code. The game will then play a cutscene which will reward you with the items the game verifies. Promotional codes are generally released on Robocraft's official website, RobocraftGame.com. The recent event of the 2017 advent calendar features a promotional code released daily. If your code isn't a verified code or its use has expired, a warning will tell you so.