Flappy Crush is a game that can be played on iPhones without requiring an internet connection. The game is simple yet fun, where you need to tap the screen to close the pipes and crush the birds trying to fly through. The game's objective is to unlock power-ups and pipes with amazing bonuses, earn Bone Bucks, and customize the birds with hilarious unlockable costumes.

The game offers five different game modes, including a same-screen two-player mode. The pixel gore inside the game might not be for the faint-hearted, but there is a switch to turn off the blood to make it less gory. Additionally, the cloud save feature allows players to pick up where they left off on a new device.

Overall, Flappy Crush is an enjoyable game that is easy to pick up, and the additional features make it more exciting. The game is available as a full version with no in-app purchases, and it's a great choice for anyone looking for an entertaining game to play on their iPhone.