Squad 51 vs. the Flying Saucers is an action-packed shoot 'em up game for the Nintendo Switch, immersing players in a 1950s sci-fi world where they combat alien forces. Players take on the role of Lieutenant Kaya, leading the Squadron 51 against the nefarious VEGA CORPORATION and its leader, Director Zarog. With classic gameplay mechanics, players can pilot four distinct aircraft, each equipped with special weapons to take on waves of enemy ships and formidable bosses across 11 diverse levels, including snowy mountains and bustling cityscapes.

The game features a cinematic experience enhanced by striking black-and-white visuals, live-action FMV sequences, and voice acting that narrates the unfolding conflict. It caters to players of all skill levels with its dynamic difficulty system, ensuring a balanced challenge. Additionally, the multiplayer mode allows a second player to join the fight at any time, fostering cooperative gameplay as they work together to unlock new weapons and upgrades.