I've been working on a fangame for quite some time. It's focused on Wario's debut, Super Mario Land 2. Besides an expanded recreation of said game it also includes a new campaign that shows how Wario took over the island and got his castle.
It's somewhat of a mix of how a Mario and Wario game...
While officially titled "Wario Land 4: Horror Manor - Sapphire Passage" this song is actually based on Wario World - Horror Manor with some soundfonting from WL4's Horror Hotel - Sapphire Passage. Wario World: Greatest 3D Game of all Time.
Artist Link: https://soundcloud.com/tahutoa/orrifying