The Last DeadEnd is a thrilling adventure game with a blend of FPS and horror elements. The game centers around a young scientist, Farhad Novruzov, who returns to his homeland to help film a documentary for an international television channel. Farhad finds himself in the middle of strange events tied to the ancient religion of Zoroastrianism, and he must discover the reason behind these events. The game is set in Baku, Azerbaijan, within a thousand-year-old district surrounded by a fortress wall, where dozens of historical and archaeological sites are located.

The game features both first-person and third-person perspectives, with most actions and active research taking place in the first-person view. The game's extensive encyclopedia and research possibilities offer articles about historical objects, characters, symbols, and more. Additionally, the game has various items that can be selected, viewed from all sides, and learned about. The game also includes a survival mode where players can fight with different enemies in various maps, with three types of survival: holding out "waves" of enemies, killing all enemies in a certain time, and last as long as possible while remaining alive.