Undead Sea Update

On June 4th, 2019, the **Undead Sea Update** was released for World War Z on all platforms.

The Undead Sea Update was a major content update as part of the Season 1 Post-Launch Content Roadmap. It was followed by the Six Skulls Update and the Proving Grounds Update.

The most notable additions to this update were a new chapter to the Tokyo episode and a new special zombie: the Infector.

## Patch Notes

#### New Content

* Added Tokyo 3 level.
* Added new special zombie that will spawn on all levels.

#### New Features

* Added private lobbies.
* Added ability to host the game locally in private lobbies. (Only on Xbox and PS4 at the moment, same functionality will be available on PC later)
* Added ability to disable bots in private lobbies.
* Added UI that shows maximum difficulty each level was completed on.
* Added FoV scale slider.
* Added option to change PvP loadout during the game.

#### AI

* Added feature that will prevent Lurker from spawning near players that are joining the game in progress.
* Tripled delay, which governs how often Lurker can spawn in the exact same position.
* Constant sprinting will now aggro zombies from a bigger distance.
* Reworked “zombie stagger” mechanics. When hit, zombies used to play a long hit animation based on gun caliber and an element of randomness. Now they will play hit animations based on gun caliber and if they are hit repeatedly in a short period. This will make shotguns and fast firing weapons more consistent at staggering zombies.
* AI Director will spawn less primary weapons if players are already carrying tier 3 weapons.
* When AI Director decides to spawn a small wave of zombies, it will contain more zombies, but the wave duration will be shorter.
* Made stealth more consistent across all levels; executing perfect stealth will delay the first wave of non-swarm zombies.
* Increased chance of spawning special zombies in idle state.

#### Weapons

* Compact SMG. Non-silenced version deals 8% more damage.
* Machine Pistol. Bottom branch version 5 deals 6% more damage.
* Machine Pistol. Increased rate of fire by 9% for all versions.
* Sporting Carbine. Top branch versions deal 5% more damage.
* Sporting Carbine. Bottom branch versions’ mag size is increased by 3.
* Advanced SMG. Non-silenced version 5 deals 5% more damage.
* Advanced SMG. Increased accuracy of both version 4’s.
* Sniper Rifle. Top branch now has a bigger magazine and better handling.
* Sniper Rifle. Bottom branch deals bigger damage with more penetration and accuracy.
* Heavy Sniper Rifle. Reduced projectile size to prevent accidental detonations.
* Revolver. Significantly increased damage. It will be able to kill a zombie on the highest difficulty with 1 shot.
* Double-Barreled Shotgun. Doubled the distance at which damage begins to reduce.
* Double-Barreled Shotgun. Reduced damage in PvP by 8%.
* Secondary Grenade Launcher. Increased max ammo from 3 to 5.Improved hit detection in PvP.
* C4 will no longer detonate in midair if hit by a friendly fire (it still can be detonated after it lands on something).
* Fixed some of the visual upgrades not showing up properly in weapon customization screen.
* Fixed some of the weapon variant icons not reflecting actual visual weapon upgrades on that weapon.
* Fixed Pump-Action shotgun displaying LOD model as well as the actual model.
* Fixed gun recoil reset when swapping weapons.

#### Perks

* Stim Pistol will now prioritize players in downed state when multiple targets are available.
* If multiple players are using “Please Stand Up” perk, only one will trigger if the entire team is down.
* All “Spawn with a Heavy Weapon” type perks will now properly adjust heavy weapons that are picked up during gameplay.

#### Stability

* Improved performance.
* Fixed several gameplay crashes.
* Fixed several issues causing disconnects when joining friend’s game in progress.
* Fixed issue that was causing 2 players appearing as the same character in game.

#### Levels

* Fixed a large number of gameplay bugs that were causing inability to progress in levels.
* Made some adjustments to AI Director that will make Moscow 3, Tokyo 2, Jerusalem 1, Jerusalem 3, and NY 3 slightly harder and Jerusalem 2 and Tokyo 1 slightly easier.
* Improved navigation on Moscow 2 level.
* Fixed issue that was causing zombie health scaling to trigger incorrectly for some zombies. In general, this makes \*Very Hard and Insane difficulties a little bit harder.

#### General Fixes

* Fixed issue that was causing Aim Assist to work even if it was disabled in options.
* Improved pickup selection system when multiple objects could be picked up by player.
* Fixed issue that was causing player to respawn with 0 ammo.
* Fixed issue that was preventing dead players turning into zombies in some cases.
* Added backpacks for character models in “Collection” screen.
* Fixed crash on party leader change during session start countdown.
* Fixed issue that was causing pickup progress bar not to appear in some cases.Fixed player and specialization level display sync in scoreboard and in lobby.
* Fixed Barricade defense kit icon display on HUD.
* Backstory unlocked UI indicator will no longer display if you have already unlocked the backstory video.
* Fixed issue that was causing some weapons to deal less damage with explosive ammo active in PvP.
* Fixed friendly/enemy player overhead marker not appearing in some cases.
* Fixed “Floor is Lava” trophy not triggering correctly.
* Player will no longer drop defense kits when picking up C4 charges in Japan 2 level.

#### PC Difficulty

* Zombies are harder to stagger on Very Hard and Insane difficulty (PC only).
* Zombies take 25% less damage from body shots on Insane difficulty (PC only).
* Reduced player revive timer from 40 to 20 on Insane difficulty (PC only).

#### PC Specific Fixes

* Fixed friend list displayed as empty for some of the players.
* Fixed issue with rebinding Sprint button on right shift button.Added Animation Quality slider that adjusts animation \*LODs, number of ragdolls, and number of dead bodies in general.
* Slightly reduced time to kill other players in PvP for all weapons.

#### Vulkan

* Improved Vulkan performance.
* Improved Vulkan stability.
* Fixed GPU idle calculations in benchmark mode.
* Fixed blood decals rendering when using Vulkan.
* Fixed flickering on some objects when using Vulkan.

## Gallery

World War Z - Undead Sea Update
Inside the Tokyo cruise shipShot of the Tokyo cruise shipInfector art from the Season 1 Roadmap
## Reference

* https://forums.focus-entmt.com/topic/39683/world-war-z-undead-sea-update-patch-notes