All media are licensed under GPLv3.

Sounds:
  menumove.ogg - remix of Whoosh1.wav by Bart Kelsey.
  countdown.ogg - Spell1.wav by Bart Kelsey.
  start.ogg - Spell2.wav by Bart Kelsey.
  rocketlaunch.ogg - Remix of Projectile launch by Michel Baradari (apollo-music.de)
  rocketboom.ogg - Remix of Explosion by Michel Baradari (apollo-music.de)
  brickmove.ogg - flanger9.wav by Arthur.
