Charles Marlow
Marlow's name may be inspired by the Elizabethan playwright Christopher Marlowe. Conrad's father was a translator of William Shakespeare who doubtless would have known of Marlowe's work as well. Some intertextual interpretations of "Heart of Darkness" have suggested that Marlowe's "The Tragical History of Doctor Faustus" may have influenced Conrad. Charles Marlow describes a character as a "papier-mache Mephistopheles", a reference to the Faust legend. Marlow's and Kurtz's journey up the Congo River in "Heart of Darkness" also has similarities to another work by Marlowe, "Dido, Queen of Carthage", in which Aeneas is stranded on the shore of Libya and meets the African queen Dido.
Heart of Darkness (video game)
After traveling across the varying alien environments and fighting alongside the Amigos, Andy finds himself inside the Master of Darkness' lair where he proceeds to free Whisky and join forces with the Vicious Servant to help overthrow the Master of Darkness. Planning to use the magic rock's power to destroy the black hole at the lair's center. However, Andy is double-crossed by the servant who kicks Whisky into the black hole and sends Andy into an ambush. Andy ends up fending off droves of shadow creatures and successfully following through with his plan, but falls into the black hole himself along with the Master of Darkness as the structure around him collapses. 
The black hole's center is the heart of darkness and there Andy must fight the Master and face his fears once and for all. Upon succeeding the darkness dissipates and Andy awakens in his treehouse, believing the experience was all just a dream but after Andy and Whisky go to sleep and it's shown Andy has likely gotten over his fear of the dark, the player is shown the Amigos cleaning up the wreckage of Andy's ship and proving the adventure was perhaps more than imaginary.