Public 4 min read Updated June 20, 2026

Heavy Rig Event

Heavy Rig EventThe Heavy Rig Event upgrades Oil Rig into a high-risk server event with extra hackable crates, Heavy Scientist waves, and spe...

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Contents
  1. How to Start Heavy Rig
  2. Wave Card Difficulties
  3. Possible Attack Events
  4. How to Get Wave Cards
  5. Before You Start
  6. Quick Summary
  7. TL;DR

Heavy Rig Event

The Heavy Rig Event makes Oil Rig a much bigger challenge with extra hackable crates, Heavy Scientist waves, and random attack events.

This event happens on Small Oil Rig and Large Oil Rig. Keep in mind that Oil Rig is still a PvP zone, so other players can show up, counter you, and fight for the loot while the event is running.

Heavy Rig is high risk, high reward. If you start it, be ready for scientists, rockets, helicopters, Bradley, and players all at the same time.


How to Start Heavy Rig

To start the event, you need a Wave Card in your inventory.

Once you are on Small Oil Rig or Large Oil Rig, find the special Heavy Rig button and press it before hacking the main crate.

This part is important:

You must press the Heavy Rig button before starting the main crate hack.

Once the main crate has already been started, you cannot activate Heavy Rig for that run.


Wave Card Difficulties

There are three types of Wave Cards:

Normal Wave Card
Starts the Normal version of Heavy Rig.

Hard Wave Card
Starts the Hard version of Heavy Rig.

Extreme Wave Card
Starts the Extreme version of Heavy Rig.

Each difficulty adds more enemies, more danger, and better reward chances.


Normal Mode

Normal Mode is the first level of Heavy Rig.

On Large Oil Rig, Normal Mode adds:

On Small Oil Rig, Normal Mode adds:

Normal Mode is the best place to start if you want to try Heavy Rig without jumping straight into the hardest version.


Hard Mode

Hard Mode includes everything from Normal Mode, but adds extra attacks while the main crate is being hacked.

Hard Mode adds:

This is where the event starts getting a lot more serious. Your team will need to defend the rig while dealing with extra threats and possible counters from other players.


Extreme Mode

Extreme Mode is the hardest version of Heavy Rig.

Extreme Mode adds:

Extreme Mode is not something you should start lightly. Bring strong gear, extra ammo, meds, and teammates you trust.


Possible Attack Events

During Hard Mode and Extreme Mode, extra attack events can happen while the crate is hacking.

These may include:

These attacks can stack up fast, especially if other players show up at the same time.


How to Get Wave Cards

Wave Cards can be obtained through Outpost vending machines, server events, or other server reward sources.

Available cards:

Higher-tier cards may also be found from Heavy Rig reward crates, depending on the difficulty and server setup.


Before You Start

Make sure your team is ready before pressing the button.

We recommend bringing:

Also remember that Oil Rig is a PvP zone. Other players can counter the event, so do not bring anything you are not ready to lose.


Quick Summary

Get a Wave Card.

Go to Small Oil Rig or Large Oil Rig.

Press the Heavy Rig button before hacking the main crate.

Survive the scientists, attack events, and possible player counters.

Loot the extra crates and get out alive.


TL;DR

Heavy Rig makes Oil Rig harder and more rewarding.

Use a Wave Card before hacking the main crate to start the event.

Normal adds extra crates and Heavy Scientists.

Hard adds attack events during the crate hack.

Extreme adds even more crates, more attacks, and maximum chaos.

Oil Rig is still a PvP zone, so expect players to fight for the loot.


Royal Family Gaming | Heavy Rig Event

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