Castle of Dragon (known in Japan as Dragon Unit) is a side-scrolling action game that brings dark fantasy thrills to the NES. You play as the knight Geraden on a quest to rescue Princess Amoreena from the dragon lord Darklarza. The game features a robust weapon system where you can collect and switch between swords, maces, and shields to adapt to different enemies. The 8-bit graphics capture a grim atmosphere, from ruined castles to cavernous depths. With its challenging boss fights and two-player cooperative mode, Castle of Dragon is a solid choice for fans of titles like Ghosts 'n Goblins or Rastan. Prepare your blade for an epic dragon-slaying adventure!