UNDETECTED is an adventure tactical stealth-action game with a top-down view, set in a grim futuristic world. The game is designed in an old-school style and resembles games from the PS2 era, including Metal Gear Solid 2: Sons of Liberty. A group of revolutionaries calling themselves Los Desplazados, including their leader Gloria, has gone missing near the Chixulub Eternal Energy Station. Mexican-American and former Simacorp agent Tenoch Kaan, who is now also part of Los Desplazados, sets out to find Gloria and her team. He is equipped with the latest biotechnological upgrades. His mission is to find out what happened to the missing members of Los Desplazados without attracting the attention of Simacorp employees.
The game belongs to the top-down stealth-action genre, where gamers must move stealthily through locations, perform silent kills, and try to attract as little attention as possible. To eliminate enemies, the hero can use various futuristic traps and gadgets.