Basically, it's flappy bird, but you have a gun, so yeah. Click on the instructions button to see the instructions, and there is also an easy mode, where you have a red line of sight. Use your gun to shoot the enemies and get points, as well as go through pipes, like in the original version.
This is the first flappy bird with a gun game I have seen yet, so yeah. This game has been updated so go check the update out it is 1000x better than this link for it below ? UPDATE https://scratch.mit.edu/projects/915514995.