The game is based on the famous movie bearing the same title. In the grim world of the future, cities lie in darkness, and nature gave its way to artificial, bio-mechanical production of all creatures - including human beings. Those "artificial humans" are called replicants, and are treated as servants unworthy of being "true" humans. You play the role of police officer McCoy, a Blade Runner, whose special job is to hunt down replicant rebels. But during your investigations, you also get to see their side, and your vision of the world and society begins to change...
"Blade Runner" is an adventure game with an emphasis on detective work rather than on puzzles. There are very few "real" puzzles in the game, and the gameplay mainly consists of questioning suspects, gathering evidence, etc. There are also some action sequences, and throughout the game you have the ability to use your gun. Your decisions can (and will) influence the outcome of the story, bringing the game to one of the six possible endings.