It is a game launched by a engineer name josh wardle. You will be given 6 attempts to guess five letter word. On each alphabet you guess a colour will be indicated how near are you to the word. It has a feature called daily solution where on daily basis people guess the word from all over the world and competitive to rank position 1. You can even share your result on any social media platform. 

Source: https://www.waybinary.com/wordle-alternatives/