Adventure Island Crossover

 is a fan game based on Hudson's Adventure Island. It has the player control Master Higgins adventure through several worlds from other video games, mainly from the 8-bit era. It was made using Construct 2 and was released in 2017.

It seems to have been well received. It may also have the honour of being the first ever Adventure Island fan game.

Gameplay
Gameplay wise, it is similar but quite different to the source material. Whilst the player can throw hammers by pressing down, until being out of energy as it seems, the physics and style appear more in line of a simple platformer. Some features are from Super Mario Bros. such as hitting "?" blocks. The player can run by double-tapping the arrow keys, although the difference seems minimal.

On the way to the end of the stage, the player can collect items hidden around. There is a counter for how many items in the stage have been collected vs. how many there are.

Trivia

 * In the demo stages, the game was known as "Adventure Island V."