sawtooth-440Hz.wav by xserra -- <a href="https://freesound.org/s/244260/" rel="nofollow">https://freesound.org/s/244260/</a> -- License: Attribution 4.0 also comes from level 1 of this game: <a href="https://apkpure.com/cube-strike-elite-war-games/com.awesomegames.bulletscamairportsurvival/download" rel="nofollow">https://apkpure.com/cube-strike-elite-war-games/com.awesomegames.bulletscamairportsurvival/download</a>