Hugo: Black Diamond Fever is a three-dimensional platform game whose main character is the TV troll Hugo.
The witch Scylla enslaved the inhabitants of Volcano Island with the help of Don Croco and his crocodiles. The Kikurians have been forced to work in the mines to extract the rare black diamonds that Scylla needs to create the ultimate evil formula. One of the imprisoned Kikurian elders sends a letter asking for help to Hugo. Now it's up to you to stop Scylla.

In the game, you will have to defeat enemies by hitting them with your tail. The enemies are various jungle animals and Don Croco's crocodiles. Along the way, you can free Kikurians and collect diamonds.