Minecraft was released by Mojang in 2011 and its experience system rewards players for mining, smelting, breeding and defeating mobs with glowing orbs that fill a level bar. When the bar reaches a new level the game plays this distinctive chime, separate from the smaller orb pickup sounds. As Minecraft clips spread on YouTube and later on short form video, creators began lifting the chime as a standalone cue for progress. It remains popular because even viewers who do not play recognise its meaning from years of gameplay footage.