Adventure Island II for Nintendo NES is a classic 2D side-scrolling platform game and a sequel to the original Adventure Island. Released in 1991, it maintains the primary mechanics of the original, with the protagonist, Master Higgins, traversing through eight different islands in order to rescue his beloved Tina, captured by the Evil Witch Doctor. The game introduces a new mechanic, where players can now store animals in inventory and carry them across levels. Four dinosaur helpers aid Higgins in this adventure by granting unique abilities. The game provides fresh challenges through boss battles and hidden egg items, garnering nostalgic appeal for retro adventure gaming enthusiasts.