Lost is a single-player, shareware, 3D maze exploration game. In the shareware version of the game there is a single maze to be explored, in the registered version there are five. In each game the player must find and collect five gold coins on each level in order to leave the maze and progress to the next level. In the final level there's also an energy crystal to be found. The game has basic sound effects, bangs and bleeps when the player finds a coin or runs into a wall, and is played with either the keyboard, mouse, or joystick.