Sqoon is a distinctively quirky underwater shoot-’em-up developed by Home Data and published by Irem in 1986. The game places players in command of a pink submarine tasked with repelling an alien invasion that has submerged the world’s continents. Unlike the standard "destroy everything" philosophy of its contemporaries, Sqoon introduces a frantic resource management mechanic where the player must rescue survivors from submerged cities. These survivors must be ferried to a mobile base ship in exchange for fuel, creating a high-stakes gameplay loop where running out of gas is just as lethal as an enemy torpedo.
The tactical depth of the game is defined by its dual-weapon system, requiring players to manage forward-facing missiles and downward-aimed depth charges simultaneously. This verticality is essential for navigating the cramped oceanic trenches and managing the diverse enemy types that swarm from all directions. The translated version is particularly valuable for modern players, as it clarifies the mission objectives and the "Mobile Prison" mechanics that were often lost on English speakers playing the original Famicom release. While the difficulty is punishingly high, the satisfaction of a successful rescue run provides a unique tension not found in more traditional horizontal shooters like Gradius.
Visually, the game utilizes a vibrant, albeit flickering, palette that makes the submarine stand out against the deep blue abyss. The sprites are expressive for the era, and the scrolling remains relatively smooth despite the chaos on screen. While the soundtrack is repetitive, its upbeat tempo reinforces the sense of urgency inherent in the fuel-hunting mechanics. Sqoon remains a fascinating example of early NES innovation, blending rescue-platformer elements with arcade shooting to create a genre hybrid that feels surprisingly fresh even decades after its release.
