The gameplay is almost exactly the same as the original. (The only gameplay change was adding a hitbox, so the bird wouldn't hang on a ledge by the wing.) I just cleaned up and optimized the code. If you like my code optimizations and clean up, feel free to use it in the original without credit. Click see inside to see what I changed.
The original game was made by -NinjaStorm and Sarah. FREEZING_BLAZER made the bird. RoastedSquirrel64 made the "Press the green flag to play again." art.