You have six tries to guess a random five-letter word. If the background box is green that means the letter is in the correct place. If it's yellow that means the letter isn't in the correct place but is still in the word. If it remains grey the letter isn't in the word you're trying to guess.
Well it's Wordle so I'm obviously not the first person to come up with this. However I was inspired to make Wordle on scratch after coming across this: https://scratch.mit.edu/projects/1284977687/ So shoutout to TiggyXD I guess.