These visions were sent by Raiden to his past self, in order to prevent Armageddon.
Gallery
Raiden's first vision in which he sees his corrupted self do battle with the half-god Edenian, Taven.
Dark Raiden posing a deal with the Emperor and the Forces of Darkness as seen in the 2nd part of Raiden's images.
Corrupted Raiden, reanimating the dead corpse of the Shaolin Monk Liu Kang after attempting to kill Shujinko but failed.
The Deadly Alliance and Raiden as they try to stop Onaga.
Raiden doing battle with the Deadly Alliance of Quan Chi and Shang Tsung. Similar to the Deception game intro.
Raiden, telling the Earthrealm warriors about the threat of the Deadly Alliance at a campfire, similar to the Deadly Alliance game intro.
Raiden, as he approaches the newfound Lin Kuei leader at the time, Sub-Zero (Kuai Liang), to join his and Earthrealm's cause.
Raiden, as seen alongside Sonya and Jax near a portal in one of his visions. Presumably around the time of MK4.
Raiden, as he finds and holds the deceased Liu Kang's body at the Wu Shi Academy grounds.
Raiden, as he sees himself doing battle with the former Elder God Shinnok.
Liu Kang, as seen stopping Shao Kahn at the end of MK3.
Tarkatans, with a Tormentor, wreaking havoc in Earthrealm.
Johnny Cage as he is killed by part of Shao Kahn's extermination squad leader (Motaro), which is Raiden prevented from happening in the alternate timeline.
Raiden discussing something with Nightwolf, as seen in one of his visions.
Raiden, witnessing Jax as he first gets his bionic arms.
Raiden witnessing Shao Kahn's defeat by Liu Kang in MKII.
Raiden witnessing Kano being captured (presumably alongside Sonya) in Kahn's Colosseum.
Sonya doing battle with Tarkatans, eventually overwhelming her, leading to her capture.
Shang Tsung's defeat at the hands of Liu Kang in MK.
Kung Lao as he faces off against the Tarkatan general Baraka.
Reptile seen attacking Johnny Cage.