Press the up arrow to flap, and the down arrow to dive. R to play a new game. Press the A key to instantly die (functionality not available on mobile) If you are playing on mobile, you can use the buttons on the bottom right of the screen instead. Here is proof that it is possible to make Flappy Bird in under an hour.
v1 - Initial Release Was made in half an hour. v1.1 - Graphics Update Modified Bird sprite. Added death message. Added Score counting Added particle effect for flapping Changed backdrop v1.2 - Pipeworks Update Added moving pipes Made pipes move faster the longer you stay alive Added Highscore system Added Timer v1.3 - Polishing Update Updated death message Added more variety to flap particle effect Reorganised GUI v1.4 - Mobile Support Update Added mobile support Added flap buttons Edited GUI Fixed bug where speed increased 1 pipe too late Added explosion effect Slowed continuous growth of pipe speed down v1.5 - Progression Update Slowed down the increase of pipe speed yet again Made moving pipes more common in later stages Added instadeath key Added different death messages for different causes of death v1.5.1 - Red Update Added a limit to how high you can go Adds red pipes, which get more common as gameplay continues and have less space to fly through v1.6 - Deep Dive Update Reduced maximum moving pipe speed Reduced maximum moving pipe range Reduced the increase of pipe acceleration Made red pipes slightly more common Widened both types of pipe to be 4 pixels wider Modified explosion effect Added the ability to dive - causes you to fall faster v1.6.1 - Audio Update Added background music Added game-over sound effect Added cooldown to diving to stop exploits Added particle effect for diving v1.6.2 - An Average Update Added calculation for Average Score v1.6.3 - The Internal Update Changed internal logic for pipe scrolling Added logs for everything in the code