Adventure Island II - Aliens in Paradise ROM

Also, be sure to check out Adventure Island.

Adventure Island II – Aliens in Paradise is a side-scrolling platform game developed and published by Hudson Soft that was originally released for the Nintendo Entertainment System in 1992 and the Game Boy in 1993. Higgins can crouch, an ability he did not have in the previous NES games, but he loses the ability to backtrack during a stage.

Unlike the previous game, the boss does not move to a different stage when the player loses a life. The inventory system from the second NES game is still present, but this time he has eight items to choose from instead of just five. Higgins has a fifth dinosaur friend who can help him out: a triceratops (summoned by a star card) that can defeat enemies with his rolling attack.

The other new items include a boomerang weapon that can be used as an alternative from Higgins’ traditional stone axe weapon, and a crystal that provides Higgins with one hitpoint when he begins a stage. There are different hidden rooms as well, such as a treasure room where Higgins can choose a new power-up, a surfing bonus round, a room containing a crystal (with an option to continue the level or skip it), and a room with the option of skipping a boss (which will also skip the stage) or not.