A trailer previewing the upcoming PSP game Ys vs. Sora no Kiseki: Alternative Saga, coming from Nihon Falcom this July 29 in Japan. In this crossover multiplayer fighting game, characters from Falcom's two most successful franchises - Ys and The Legend of Heroes: Sora no Kiseki - meet face to face in battle. A co-op multiplayer mode is also included, and on the technical side, Ys vs Sora no Kiseki is based on the same company's Ys Seven engine, featuring a free-roaming 3D world map.