Jean-Luc Island is a small First Sea island with limited but important uses in progression and exploration. Despite its size, it remains relevant because of its connection to the Saber Puzzle and item hunting.

Its main purposes are serving as a location for part of the Saber Puzzle, a Diamond Chest spawn, and a possible fruit spawn location, making it worth visiting for players hunting rewards or completing progression tasks.

The island is located between Magma Village and Pirate Village in the First Sea.

Visually, Jean-Luc Island is a small cave centered island similar in design to Cave Island in the Second Sea, though noticeably smaller. The area features extra terrain and several trees surrounding the cave where the Mob Leader is located.

The only NPC on this island is Mob Leader.