At the moment, Square Bird. is not available for direct download on a computer. However, you can use emulators to run it on PC. The downside is that using Square Bird. with an emulator might slow down your computer's performance.
Learn how to use Square Bird. on your computer in these 5 simple steps:
Build your egg tower and pass the barriers, but beware! Keep it smooth, on the right timing and the right level. Touch the grass 3 times with perfect landing to reach the Square Bird Fever mode.