We're just over an hour away from complete Chaos!

Apex Legends' Caustic-themed Chaos Theory event is here and we have an official set of Patch Notes for you to catch up!

Here's everything you need to know.

LATEST - Chaos Theory Collection Event is Here!

The Chaos Theory Collection Event is rolling out in Apex Legends now, and it comes with some serious firepower in its patch notes!

The update's file size differs on each platform, but breaks down like this:

• PS: 11GB
• Xbox: 9.1GB
• PC: 5.16GB

Bug Fixes Incoming

Fear not, the Chaos Theory event isn't just adding to Apex Legends. It's also fixing quite a few bugs!

Below, we've listed them all to keep you updated ahead of launch.

Gibraltar

• Corrected an issue with Gibraltar not getting hit registrations when simultaneously releasing ADS and shooting while his Gun Shield was up

Wraith

• Wraith players can no longer cancel Into the Void by jumping at a wall
• The New Skydive Emote will now work with Legendary Skins

Caustic

• Fixed a bug that was causing Nox Gas to flicker for some players affected by it

Octane

• Repeatedly using the same jump pad no longer disables double-jumps
• Players are no longer allowed to “glide” along a wall after using the jump pad

Crypto

• Crypto’s animation to bring out his Drone is no longer skippable by throwing a holospray
• Crypto can no longer teleport to a replicator
• Reloading the Mastiff and 30-30 will no longer be faster while in Crypto’s drone

Loba

• Fixed a few areas Loba could teleport into that would get her stuck

Rampart

• Players can no longer use Sheila to get under the world when placed too close to the Phase Runner in Olympus

Horizon

• Fixed the Gravity Lift falling through the floor when used on the train tracks in World’s Edge’s Sorting Factory
• Using a zipline after a Gravity Lift will no longer increase accuracy

Fuse

• Motherload will now damage and destroy jump pads
• When under a small enclosure, players will no longer be pushed out after using Motherload
• Players can no longer double their grenades after looting a dead Fuse’s deathbox

Mastiff

• Dropping and picking up the Mastiff will no longer cause it to be reloaded

3030 Repeater

• Dropping and picking up the 30-30 will no longer cause it to be reloaded
• 30-30 will now have spread deviation when ADS firing and jumping

MISC

• Fixed a bug preventing Steam users from sending friend requests to each other
• Usernames now update when a user swaps between the Origin Client to the Steam Client
• Fixed a bug preventing players from creating or joining clubs due to their EA Account already being associated with another platform

Loot Upgrades

King's Canyon is getting a little refreshment as we head into the Chaos Theory event later today.

" We’ve done a pass on the loot to bring up the quality across the map, while also maintaining a certain amount of loot after Mirage Voyage has flown away."

One key feature of this is the fact that "Caustic Treatment" is going to have a higher loot rate than Water Treatment did and it will always be high quality!

Seems like there might be a new drop hotspot going into the Chaos Theory update.

Caustic Changes Incoming

One of the major changes coming with this update is a Caustic nerf!

We think it's a little bit outrageous given the fact that the Chaos Theory event is a Caustic-themed event, but it is what it is. Clearly, Respawn thought otherwise.

In the Chaos Theory update, Caustic's Nox Gas is getting a flat-rate tick which is lower than the lowest tick it was previously and his Gas Grenade cooldown is going up.

This means Caustic players are going to do less Gas damage and be able to dish out said Gas Damage less frequently.

Is he going to be viable still?

Release Date

Apex Legend's Chaos Theory event kicks off on March 9 and will last until March 23.

After a new announcement, we now know the event will begin at 10am EST (3pm GMT), so don't miss it!

Trailer

Check out the trailer for the Apex Legends Chaos Theory event.

Nintendo Switch Port

Alongside the Chaos Theory Event, we'll also see the arrival of Apex Legends on Switch, which has been rumoured for a long time now.

It will also release on 9 March and will be the fully-featured version of the game, simply reworked to function on the Switch's control system.

Read More: How to turn off Apex Legends crossplay on Nintendo Switch

Also, the Switch version will feature crossplay with all other platforms that Apex Legends is on.

However, there will be no cross-progression, so you won't be able to bring any existing characters you have into the Switch version.

The Switch port will also support the new Chaos Theory event, so will have brand new content for the game.

Keep an eye on Apex Legends' official social media channels for more information leading up to the Switch release on March 9.

Patch Notes

Ahead of the Chaos Theory event, Respawn Entertainment has released its patch notes, check them out below.

LEGEND UPDATES

Caustic

• Nox Gas Grenade cooldown increased from 2.5 minutes to 3.5 minutes.
• Nox Gas damages at a flat rate of 5hp per tick instead of ramping up from 6hp → 12hp.

Caustic is brutally effective at slowing down engagements. The entirety of his kit revolves around gas with a large area of effect, slow, vision obstruction, and direct health damage. It’s proven to be too oppressive in too many scenarios especially considering teammates can play in gas relatively unimpaired. Significantly reducing gas damage (without taking it away completely or having it affect armor instead) seems like a fair compromise that stays true to the character while making him less oppressive on the receiving end. We will be monitoring the data and gameplay closely. If these changes hit Caustic’s appeal or effectiveness too hard we will revisit accordingly.

Pathfinder

• Removed Low Profile

Low Profile has been used as a balancing tool for both mobile and/or small legends. Although Path is still mobile, his hitbox is large. While his overall win rate and encounter win rate is by no means low, it’s hard to justify keeping Low Profile on a hitbox of his size.

Gibraltar

• Removed 15% faster heal item usage while in Dome of Protection.

Horizon

• Increased Black Hole cooldown from 2 minutes to 3 minutes

Revenant

• Revenant’s Silence now disables Mirage’s cloaked revive & respawn as well as Octane’s Swift Mend.

Wattson

• Wattson now has passive shield regen at 0.5 hp/s (half of Octane’s current health regen rate).

Rampart

• Explosives damage Amped Cover normally, instead of inflicting 200 damage.
• Explosives damage Sheila normally, instead of inflicting 175 damage.

Walls should be beefy and powerful once built. Before Rampart shipped, we were worried that her nests would be too oppressive and so we gave enemy players the option to quickly clear them out with grenades. This wasn't necessary, as it turns out, so we're removing increased damage from grenades against Amped Cover and Sheila.

WEAPON UPDATE

Weapon Optics

• All gold AR and LMG default optics updated to 2x Bruiser.

Mastiff

• Pellet damage decreased from 13 → 11. Fire rate increased from 1.0 → 1.1.

The goal of these changes are to place this weapon’s identity between the fast fire EVA-8 and the heavy hitting Peacekeeper. The Mastiff has consistently been dominant in close quarters combat given its forgiving spread pattern and high damage spikes with each shot. This change reduces that high damage potential in order to limit the amount of two pumps players experience on the receiving end.

Wingman

• +1 bullet to every magazine size, including base.

Hemlok

• Increased hip-fire spread.

The burst damage from the Hemlok's hip-fire was feeling a little too consistent for an AR that should excel at medium range. This change mitigates the Hemlok’s close quarters damage spikes that felt bad on the receiving end.

QUALITY OF LIFE CHANGES

• Kings Canyon Loot - we’ve done a pass on the loot to bring up the quality across the map, while also maintaining a certain amount of loot after Mirage Voyage has flown away. 
  • The wooden shacks across the map should have a few more pieces each, and generally be a little higher quality.
  • Spotted Lake has been reduced to Medium Quality from High.
  • Crash Site has redistributed the loot in the area slightly. The amount stays the same, but the higher quality loot should be in the ship.
  • Caustic Treatment has more loot than Water Treatment, and it remains Hiqh Quality.
• Locked Weapon Optic Swapping - For guns with fully locked attachment slots, like fully-kitted gold weapons and most crate weapons, you can now remove the optic and replace it with a different sight. This does not apply to the Kraber sniper rifle.
• Assists have been added to the in-game HUD, next to kills. This was already present in Ranked and now has been added to unranked. Assists still don’t contribute to XP. This has replaced the Spectator “eye” icon.
• Assists and Knocks have been added to your squad’s banners and will show at the end of a match.
• Club names now appear on Match Summary and Champion screen if all players are part of the same club.
• Items will no longer “stick” to Crafting Replicator when dropped on the Replicator.
• Badge Progress - for badges that have longer amounts of progress, hovering over the badge will show you more information. For example, if you’re trying to get 50 wins as Lifeline, you’ll now see that you have 45 instead of somewhere between 15 and 50.
• Ping My Deathbox - While respawning on a dropship, you can now ping your own deathbox to help locate it easier. 
• Gold Backpack - Players being revived by a gold backpack will have a crackle of energy—based on the tier of armor they wear—while the revive is taking place. They will also display the armor heal FX when the revive is finished. This change should help players prioritize pushing a revive in progress.
• Players on PC can now go back to the title screen from the lobby to allow switching of data centers without restarting the game.
• Added numbers to the Advanced Look Controls. This should help people experiment and easily revert back to their favorite settings.
• When scanning a beacon for Ring 6, you should now be able to see the location where Ring 6 finishes.
• Inspect Weapon - Since the Survival Slot took its button on controller (we only have so many buttons!), Inspect Weapon has been moved to the emote wheel by default. It can be bound to any key on PC.

FIXES

Gibraltar

• Corrected an issue with Gibraltar not getting hit registrations when simultaneously releasing ADS and shooting while his Gun Shield was up

Wraith

• Wraith players can no longer cancel Into the Void by jumping at a wall
• The New Skydive Emote will now work with Legendary Skins

Caustic

• Fixed a bug that was causing Nox Gas to flicker for some players affected by it

Octane

• Repeatedly using the same jump pad no longer disables double-jumps
• Players are no longer allowed to “glide” along a wall after using the jump pad

Crypto

• Crypto’s animation to bring out his Drone is no longer skippable by throwing a holospray
• Crypto can no longer teleport to a replicator
• Reloading the Mastiff and 30-30 will no longer be faster while in Crypto’s drone

Loba

• Fixed a few areas Loba could teleport into that would get her stuck

Rampart

• Players can no longer use Sheila to get under the world when placed too close to the Phase Runner in Olympus

Horizon

• Fixed the Gravity Lift falling through the floor when used on the train tracks in World’s Edge’s Sorting Factory
• Using a zipline after a Gravity Lift will no longer increase accuracy

Fuse

• Motherload will now damage and destroy jump pads
• When under a small enclosure, players will no longer be pushed out after using Motherload
• Players can no longer double their grenades after looting a dead Fuse’s deathbox

Mastiff

• Dropping and picking up the Mastiff will no longer cause it to be reloaded

3030 Repeater

• Dropping and picking up the 30-30 will no longer cause it to be reloaded
• 30-30 will now have spread deviation when ADS firing and jumping

MISC

• Fixed a bug preventing Steam users from sending friend requests to each other
• Usernames now update when a user swaps between the Origin Client to the Steam Client
• Fixed a bug preventing players from creating or joining clubs due to their EA Account already being associated with another platform

We'll have more on the Chaos Theory Event once it is live.