I saw the tweet was already posted, but here's a link to an article full of zero information.
Also not sure that I'm buying the creator was bringing in $50,000/day. That's over $18M a year from Flappy Bird and he suddenly pulls it off the shelf?
https://www.yahoo.com/tech/get-it-while-you-can-flappy-bird-to-be-removed-from-76062214252.html