bg-beach.mp3: https://freesound.org/people/John%20Sipos/sounds/191444/
bg-music.mp3: https://freemusicarchive.org/music/crowander/from-the-garage-funkrock/night-surfing
impact-enemy-ball.mp3: kenny.nl; kenny_impactsounds - impactSoft_heavy_003.ogg
wave-appear.mp3: kenny.nl; kenny_musicjingles - jingles_STEEL03.ogg
impact-tower.mp3: kenny.nl; kenny_impactsounds - impactSoft_medium_004.ogg
impact-castle.mp3: kenny.nl; kenny_impactsounds - impactPunch_heavy_004.ogg
pick-tower.mp3: kenny.nl; kenny_interfacesounds - select_007.ogg
place-tower.wav: https://freesound.org/people/doorajar/sounds/427074/
fling-[n].wav: https://freesound.org/people/PhilStrahl/sounds/497037/
die-crab.mp3: https://freesound.org/people/Clearwavsound/sounds/524608/
die-gull.mp3: https://freesound.org/people/nigelcoop/sounds/73497/
die-turtle.mp3: https://freesound.org/people/pfranzen/sounds/339791/
harvest-tower.mp3: kenny.nl; kenny_interfacesounds - jingles_STEEL10.ogg