"There is a post on about a giveaway of games, but in order to participate, you need to solve a code. The code is always 5 characters long, and you need to enter it into a field that will take you to the next game. The first code is located on the site that you’re redirected to when you click on the list of games. Help me find all the codes."
https://www.steamgifts.com/discussion/ZhZFE/11th-factory-day-community-puzzle-for-clair-obscure-lvl-1-5-ends-2706 