Here are some possibilities:
* The secret of Monkey Island's success: The game's success can be attributed to its charming humor, clever puzzles, memorable characters, and unique art style. It managed to capture the essence of classic adventure games while adding its own unique charm.
* The secret of Monkey Island's story: The game's central mystery revolves around the legend of Monkey Island and the quest to find the legendary treasure of Captain LeChuck. However, there are deeper themes explored like love, revenge, and the struggle for identity.
* The secret of Monkey Island's hidden details: The game is full of little secrets and easter eggs for players to discover. These range from hidden jokes and references to alternate endings and bonus content.
Ultimately, the "secret" of Monkey Island is a mix of all of these elements. It's a game that is both fun and engaging, while also offering a deeper level of meaning and mystery.
Do you have a particular secret in mind?
If you're looking for specific information, let me know and I might be able to help!