Adventure II is a homebrew for the Atari 5200 programmed by Ron Lloyd and Alan Davis, with graphics by Keith Erickson. AtariAge began producing cartridges for the game in 2007.

The Enchanted Chalice is once again missing, and it's the player's mission to return it to the Seashore Kingdom's Castle, navigating through several mazes and kingdoms, and avoiding three dragons, a minotaur and a troll.

The forces of Evil have stolen the Enchanted Chalice from the Seashore Kingdom's Castle, and now evil creatures lurk around every corner, terrorizing the villagers. Having heard stories of an adventurer who braved perilous adventures to rescue the Chalice in the past, you take up the mantle to recover it once again.