SOA, BLUE, ECO, JOSHUA.The retro-style Side Scroller shooting game with vivid storyline depict their own stories of four fully charactered protagonists!One day, a mysterious vortex emerges in the city center!Each of selected character would follow different storylinesYou won't miss the reality of incident as game stage progresses more. Features: - Various charactered protagonists with their own interesting storylines. - Game Stages decorated in various themes and challenging boss infests. - Each hero is equipped with multiple and original attack skills.

Go to: http://store.steampowered.com/ and download STEAM client Click "Install Steam" (from the upper right corner) Install and start application, login with your Account name and Password (create one if you don't have). Please follow these instructions to activate a new retail purchase on Steam: Launch Steam and log into your Steam account. Click the Games Menu. Choose Activate a Product on Steam... Follow the onscreen instructions to complete the process. After successful code verification go to the "LIBRARY" tab and start downloading.