Sony has successfully launched stunning new gameplay demos for heavyweight first-exclusive titles, "Days Gone", and "God of War". The press conference went live at E3 2017 that kicked off on Monday.

First off, the game publisher showcased the brand new gameplay footage of its hotly anticipated survival horror zombie game, "Days Gone", yesterday, June 12.  The teaser also demonstrates how players can maneuver the survival settings and intense encounters with other humans.

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The demo then ended with main protagonist Deacon St. John face to face with someone holding his his friend as hostage and the two teamed up to put down the enemy. But the real catch in final scene is when a giant zombie bear creature appeared in the picture. 

"Days Gone" is set to arrive on PS4 and will also support enhancements for PS4 Pro. Unfortunately, SIE Bend Studio is not yet ready to announce the release date at the event as opposed to what many fans have expected. (Watch the full E3 2017 trailer for "Days Gone" below.)

In more news, Sony has also unveiled the incredibly stunning "God of War" trailer that shows off intense action, sea monsters, including Kratos and Atreus' father and son bonding moments.

The new trailer concluded with Kratos and Atreus' encounter with the giant sea serpent that might be Jörmungandr. The monstrous creator could be one of Loki's three children who could bring about of Ragnarok, the apocalyptic event in Norse mythology.

If this speculation is anything to by, fan theories that Atreus is a secret enemy of Thor may as well be true. He could possibly the incarnation of Norse mythology's apocalypse, Ragnarok.

"God of War" is confirmed to officially hit PS4 in early 2018. The latest gameplay trailer showcased at E3 2017 is embedded below.