Vulgus (バルガス) is a vertically scrolling shooter developed and published by Capcom in Japan in 1984, and was later released in North America by SNK the same year. The word "Vulgus" comes fom Latin and means "common people", people of lower layers of society. The game has the distinction of being Capcom's debut video or arcade game. The game is also included in Capcom Classics Collection and is now available as freeware. Source: Wikipedia, "Vulgus", available under the CC-BY-SA License.