The Tank comes from Left 4 Dead 2, Valve's co-op zombie shooter released in 2009, where its roar and pounding theme warn a team that the huge infected is charging. Clips of the sound spread through gameplay videos, mods and soundboards because a single growl sums up the panic of that encounter. It is now used alongside other horror gaming staples like the FNAF jumpscare scream, keeping its place in edits long after the original campaigns because players instantly recognize the threat it represents.