In order for you to play Legend of Dungeon on Windows with minimal graphics settings, your computer must meet the following requirements
OS *:
Windows XP
Processor (CPU):
2.0 GHz
Memory (RAM):
2 GB RAM
Graphics Card:
GeForce 8800 or Radeon® HD4800 series, 512 MB of memory
Storage:
500 MB available space
VR Support:
SteamVR