Helldivers 2, released in 2024 by Arrowhead Game Studios, lets co-op squads call down support using stratagems activated by a short sequence of directional inputs. The system is a signature part of the game, turning reinforcements, sentries, and orbital strikes into a test of memory and calm under pressure. Clips of the input beeps spread through gameplay videos and edits because players instantly recognize the rhythm and the panic of entering a code mid-battle, making the sound a shorthand for a desperate tactical call-in.