Stairs is an iPhone game developed by Ketchapp that challenges you to climb an endless set of stairs. As you climb, you must dodge spikes, collect rubies, and aim for insane perfect combos. The game starts easy, but quickly becomes challenging as the stairs become more complex and obstacles increase.

The game's graphics are simple but effective, with bright colors and smooth animations. The controls are intuitive, with a tap to jump and a swipe to change direction. Stairs is highly addictive, and you'll find yourself constantly trying to beat your high score.

Overall, Stairs is a fun and challenging game that is perfect for quick gaming sessions or long play sessions. Its simplicity and addictiveness make it a great choice for anyone looking for a new game to play on their iPhone.