Wonder Boy in Monster World Steam CD Key Platform: Steam Release Date: 04/05/2017 Product Description Monsters have taken over the land, and every day the citizens fear for their lives, hoping that a hero will step forth and bring peace to the embattled country. System Requirements PC System Requirements: OS: Windows® XP or higher Processor: Intel Pentium 2.0 GHz Memory: 2 GB Graphics: 32MB or greater graphics card DirectX®: DirectX® 9.0 or greater Hard Drive: 50MB free disc space Sound: System specs for classic launcher.