Warframe is the co-op looter shooter developed by Digital Extremes and first released in 2013, where missions against the Corpus faction can escalate when alarms trigger heavier reinforcements. The Bursa is one of those responses, a bulky Corpus proxy built to pressure players mid-mission. Clips of its reinforcement cue later spread to soundboards as a short gaming alert, in the same family as the Metal Gear Solid Alert, and players reuse it whenever a video needs an instant sense that backup has arrived for the other side.