Demonstar is an 1997 Indie vertical scrolling shooter shareware computer game was designed and developed by Mountain King Studios, Inc. and published by ionos, inc. in 1997. It is was the first original DemonStar series of top down vertical scrolling shooter computer game. The version was also 3D parallax air and ground was published ionos, inc. The game shares many similarities with the Raiden series. DemonStar features various power-ups, including smart bombs and other power-ups which modify the types of projectiles that the player's ship fires. The full version of the game features 18 levels. At the end of each level is a boss ship that the player must destroy. DemonStar was very successful in the shareware computer game, despite Mountain King Studios initially addition to the original game, two additional titles have been released: DemonStar Secret Mission 1 and DemonStar Secret Mission 2.