The violent modification of Don't Touch My Birdie by Mark Steve Samson licensed under Creative Commons Attribution-NonCommercial 4.0 International License.
the weird frog image is modified from another frog image
Originated from the Repository Tusenpo(https://github.com/tusenpo/FlappyFrog/). Modified For GUOJIERYUAN. Modified by yalewoo. All copyright goes to Tusenpo.