Starting from 19/11/2018 we officially integrated our internal system with Facebook.
One of the features brought by this is the chance to obtain free credits by liking our FB page post.
All you have to do is link your FB account from this link: https://chromerivals.net/account/manage/connections .
After you linked your account you can start obtaining your credits by visiting this website section: https://chromerivals.net/account/manage/free-credits .
We recommend you to check it often since daily new tasks might be available.