A demo for Spy Drops Gaiden has launched on PC via Steam during the Steam Next Fest. The game, developed by Dadako and published by Rainy Frog, is a 2D stealth action title set in the Spy Drops universe. Players take on the role of special agent Ripley, tasked with infiltrating enemy bases on an island off the coast of Japan. The gameplay emphasizes stealth, with missions involving rescuing prisoners, gathering intelligence, and executing drone strikes. The demo features eight missions with rank-based performance goals, weather effects, and mission-specific gadgets. The game has a Game Boy-inspired aesthetic, with monochrome visuals and chiptune soundtracks.