The Great Jackpot Expedition

Penguin King builds The Great Jackpot Expedition around a treasure-hunting voyage, playing out on a 5x3 grid with 10 fixed paylines. Anchors, bottles, ropes, hooks, treasure items and a cast of pirate characters fill the reels, set against a ship looking out over open water with coins, cannons and island scenery dressing the scene. A jackpot board and progress map sit above the grid, tracking how far the voyage has advanced and keeping the expedition theme visible even during ordinary base-game spins.

The game tracks progress across spins: collecting Bonus symbols works through sections of a map that eventually opens the Jackpot Expedition bonus, and that progress carries over from spin to spin instead of resetting between rounds. Once inside, a ship moves across a 10x10 grid of sectors. Cash Prize sectors pay directly, Treasure Chest sectors multiply the current prize by up to 10x, and Jackpot Island sectors hand out one of four fixed jackpots — Mini at 50x, Minor at 100x, Major at 250x or Grand at 750x the stake. An Ante Bet option doubles the odds of landing a feature trigger on every spin it's active, and a separate buy option priced at 1.4x the base bet offers that same doubled feature chance without raising the base wager, giving two separate routes to the same improved odds.

Penguin King rates The Great Jackpot Expedition as medium volatility with a 95.8% RTP and a 4,500x ceiling on wins, with stakes running from 0.10 up to 500 per spin. Between the map progression and the jackpot sectors, most of the interest comes from working toward the expedition bonus rather than the base reels alone, and the persistent map means a session can carry unfinished progress into the next spin rather than starting fresh each time.