Described as "easy to play and impossible to put down," Tappy Chicken was made by a single Epic Games artist who the studio says has no traditional programming skills. The game runs on Unreal Engine 4 and Epic Games says it's an example of how its engine can be used for a whole host of games--from graphics-intensive experiences to lighter fare like this.
Tappy Chicken plays just like Flappy Bird. Your only task is to avoid structures that stand in your way by tapping anywhere on the screen to make you chicken fly higher. When you die, Xs run through the chicken's eyes and it lays a cracked egg.
The game is free, but you'll notice some in-game ads. There's also Game Center and Google Play leaderboards, and Epic Games says new updates are on the way for the future.
As for the real Flappy Bird, creator Dong Nguyen said this month that it will return to app stores sometime in August. The new version will have multiplayer and is described as "less addictive" than the original.