Click the flag to watch! Click the tree to begin the chain reaction. Click the sound icon (it shows up when the music starts) to turn the music on or off. It only works for the music, though (you still hear the other sounds).
The music in the background is called Kalimba, and it's by an artist called Mr. Scruff. It's on an album called "Ninja Tuna." The sound effect for the malicious pop-up was from a ringtone called Error-ringtone-1042437. This project works better not in full screen.
