Plus Alpha is an arcade simulation / shooting / flying game, suitable for all smart phones and PC side. the game was launched by Jaleco Ltd company in 1989. Jaleco Ltd is a Japanese video game publisher and developer established in 2006. The original Jaleco Ltd (now called Emcom Holdings) was founded in 1974. In 2006, it decided to become a pure holding company by renaming itself Jaleco Holding and splitting its video game operations into a newly created subsidiary that took its former name of Jaleco Ltd. In 2009, Jaleco Holding sold Jaleco Ltd to Game Yarou and subsequently changed its own name to Emcom Holdings.