Last Half of Darkness is an adventure game that takes place entirely in and around a haunted mansion, complete with graveyards, crypts and foreboding swamps. It is considered by some as the forerunner of the Horror genre in adventure gaming, featuring a gloomy atmosphere, spooky music, creepy sound effects, and a spine-tingling, suspenseful storyline.

Your aunt was a type of voodoo witch in New Orleans who made potions to help friends and neighbors with their afflictions. She was killed, and you have inherited her entire estate - with a catch! In order to receive the fortune coming to you, you must finish the potions she was working on and solve the mystery of her death.

Explore the scary old house, endure the sudden noises and ignore your pounding heart. Search for clues and objects and solve puzzles to unravel this mysterious story of terror.

Graphics in the original version are 16-color EGA and are a collection of stills. The main screen is divided into 5 major sections: Graphic Gameplay Screen, Inventory, List of Exits, Commands, and a description box at the bottom. Position your mouse on a command (Move, Examine, Take and Operate) and left-click to perform that action.

There is also a VGA version of the game, released in 1991, featuring revamped graphics. The rest of the game is exactly the same as the first EGA version.

In the Windows re-release, the story remains the same. This version has improved graphics, sound and video cut-scenes. However, puzzles and locations are different from the original DOS releases. The gameplay screen is expanded to full size with the command menu placed at the bottom of the screen.