Thanks, glad you liked it! :) For the intro: you just got lucky with the music :) We have three tracks in the game: Main menu, desert theme and forest theme. The Intro and first half of the game has the desert theme. In the main game we blend over to the forest theme once the player has achieved 50% green tiles. Otherwise we have a couple "animation tweeners" on the music to fade something in or pitchbend it a bit, but that's it.