Despite looking like a simple silly puzzle-based game with pirate theming, it's a surprisingly deep niche MMO. Real guilds with massive battles can take over entire islands, with every store and location being entirely player-owned. There is an entire economy bolstered by a sizeable variety of pillages and expeditions that let you earn money and rare items, and you can wager it all on poker and other activities. Despite its' age nowadays, there's no other game like it.