Official Oilfield Strike desert refinery event artwork
Updated GuideOther Events30-Minute Battle3 Reward Sources5 Strike Skill TiersHidden OilfieldsFree OfficersPvP EnabledCentral Refinery: 23:00

Oilfield Strike

30 minutes. Grab the oil. Upgrade your Strike Skills. Fight smart. Get paid.

Oilfield Strike is a 30-minute free-for-all with one job: walk out with as much oil as you can carry. Capture oilfields, hunt Armed Patrols for Battlefield Experience, chase Hidden Oilfields, scoop up scattered oil drops, spend your teleports well, and make a play for the Refinery before the clock runs dry.

Section 1

How Oilfield Strike Works

Tap any step in the run to see what you should actually be doing.

Enter

You drop onto a shared oilfield map with everyone else. No teams, no safety net — just you, your squads and a 30-minute clock.

Your Goal

Everything in Oilfield Strike comes back to one number: how much oil you collected before the timer hits zero. Oil comes from several places at once, so parking on a single field for the whole battle is almost never your best score.

Maximize total Oil before 30:00.

Official Mechanics

Know Before You Deploy

OfficersOfficial Oilfield Strike guide artwork for Officers

Chiefs' Officers are unlimited and cannot die during Oilfield Strike. Their levels equal the highest-leveled Officers in the Chief's own Squad.

Tactical translation: Don't hoard Officers. Use your squads.

Armed PatrolsOfficial Oilfield Strike guide artwork for Armed Patrols

Defeat Armed Patrols to obtain Battlefield Experience.

Tactical translation: Keep a squad hunting while the others collect.

Strike SkillsOfficial Oilfield Strike guide artwork for Strike Skills

Battlefield Experience upgrades Strike Skills. They enhance squad Combat Power only during Oilfield Strike and reset next round.

Tactical translation: Spend XP while it can still earn Oil.

Oilfields

Occupying Oilfields allows Oil confiscation. Total Oil determines the final outcome. Lv. 1–3 fields contain Armed Guards that must be defeated first.

Tactical translation: Capture the strongest field you can safely hold.

Central Refinery

The Central Refinery unlocks 23 minutes after the battlefield opens. Its rewards are decided by cumulative Refinery occupation-time ranking.

Tactical translation: Be stacked and nearby before 23:00 — every second of holding counts.

Section 2

Before You Copy the Strategy Exactly…

Good for EveryoneStronger PlayersPD30 / T10 Strategy

This strategy was tested from a PD30 chief running T10 troops. That matters mostly in two places: punching through the guards on Lv. 3 Oilfields, and brawling for the Refinery.

Everything else works at any level. Lower-power chiefs score extremely well by taking Lv. 1 and Lv. 2 fields, farming weak patrols, and cleaning up Hidden Oilfields while the heavyweights are busy fighting each other. Watch for the badges above — they tell you which advice is meant for whom.

Section 3

Rewards Hub

Oilfield Strike pays out three ways: collection milestones, final collection ranking, and the Refinery.

Collection Milestones

Current Oil

68,420

Next Reward

75,000

Oil Needed

6,580

75,000 Oil

Upgraded bundle — this is where 10 Badge Blanks start appearing. The breakpoint worth planning your battle around.

  • 10 × Badge Blanks
  • 6 × 1-Hr Speedup
  • 320 × 10K Ammo
  • 320 × 10K Cash
  • 64 × 10K Electricity

Recommended Target: 75,000 Oil

75K is the breakpoint worth planning around — the reward bundle upgrades and starts including 10 Badge Blanks. If you only set one goal for the battle, set this one.

Section 4

The 30-Minute Battle Timeline

Every moment that matters, in order. Tap a marker for the full briefing.

0:00GO!
  • Teleport toward the center of the map.
  • Find a cluster of Lv. 3 Oilfields you can actually beat.
  • Send most squads straight onto fields to collect.
  • Keep one squad free to hunt Armed Patrols for Battlefield Experience.

Next important moment: 9:00 — Get Ready

Section 5

The Map & Its Three Zones

Three concentric rings. The further in you go, the richer the fields and the meaner the patrols.

Zone 3 — Center

Map Size

60 × 60

Fields

Lv. 3 Oilfields

Maximum

Around 30 fields

Patrols

20% weak / 80% strong

Patrol mix

Teal = weak · Red = strong

The good stuff. Most oil per field, most strong patrols, most competition. If you can handle the guards, this is where the battle is won.

Zarael & Awkie Tip

Start toward the middle. Zone 3 has the densest pack of Lv. 3 Oilfields and the strongest patrols, which makes it the best opening area — provided your squads can actually handle what lives there.

Section 6

Know Your Oilfields

Four field types, four very different jobs.

Which Oilfield Should I Take?

Lv. 3 Oilfield

The best oil-per-march in the event — if you can beat an 18.8M guard stack. Big power only; losing repeatedly here costs far more than the oil is worth.

Compare Oilfields

Oil Rate Race

TypeOilRateDrainGuardsRole
Lv. 18,640 oil8 / sec18 minutes682K guard powerSafer
Lv. 217,280 oil16 / sec18 minutes1.95M guard powerMid
Lv. 334,560 oil32 / sec18 minutes18.8M guard powerStrong
Hidden4,000 oil200 / sec20 secondsNo guards at allOpportunity
Lv. 18 / sec
Lv. 216 / sec
Lv. 332 / sec
Hidden200 / sec

Hidden fields fill fastest but contain only 4,000 Oil. Speed is not total yield.

Section 7

Why Lv. 3 Matters More Than It Looks

Same 18 Minutes

Lv. 1, Lv. 2 and Lv. 3 all drain in the same 18-minute base time.

More Oil, Faster

The higher fields simply hold proportionally more oil and collect proportionally faster.

Less Relocating

The real prize is fewer marches. Less redeploying, less travel time, more collecting.

Section 8

Hidden Oilfields: Chase It or Skip It?

4,000 oil, no guards, gone in twenty seconds. The only question is whether you can get there in time.

Official Hidden Oilfield

Oil

4,000

Rate

200/sec

Drain

20 sec

Guards

None

Chase It

Guide estimate only. Compare the travel time, remaining Oil, and what your squad gives up to make the trip.

Chase It

  • Your squad is idle anyway
  • You can get there quickly
  • The field still has most of its oil
  • It's roughly within a 30-second march

The napkin math

30 sec march + 20 sec drain + 30 sec return ≈ 4,000 oil in 80 seconds. That's roughly 3,000 oil per minute.

Skip It

  • It's far away
  • The march eats more time than the oil is worth
  • Someone already drained a big chunk of it
  • You'd abandon a better situation to chase it

Fast oil is great. Crossing half the map for leftovers isn't.

Sections 9 & 10

Strike Skills

Five tiers, two choices each. Pick one per tier — the other locks for the rest of that battle.

Oilfield Strike battlefield experience and skill progression artwork

Battlefield Experience Loop

Armed PatrolsBattlefield XPStrike SkillsMore Oil

Stronger and more efficient squads create more opportunities—but every Strike Skill resets next round.

Battlefield Experience comes from defeating Armed Patrols — not the guards sitting on Oilfields. Keep one squad on patrol duty all battle long.

Weak Armed Patrol: 75 XP
Strong Armed Patrol: 150 XP
Full tree: 5,400 XP
That's about 36 strong patrols, or 72 weak ones

Build Your Strike Skill Path

How do you want to play? Pick a style to highlight the skills that fit it — there is no single mandatory build.

T1Tier 1200 XP
T2Tier 2500 XP
T3Tier 3900 XP
T4Tier 41,500 XP
T5Tier 52,300 XP

My Oilfield Strike Build

Selected XP

0 XP

Full Tree

5,400 XP

  • Tier 1— not selected —
  • Tier 2— not selected —
  • Tier 3— not selected —
  • Tier 4— not selected —
  • Tier 5— not selected —

Important

Your normal out-of-event march speed and gathering bonuses do not apply inside Oilfield Strike. Alliance Tech, personal research and VIP can still feed your combat power where relevant, but march speed and collection speed inside the event are controlled by your Strike Skills.

Section 11

The Refinery — Final 7-Minute Fight

Official Central Refinery structure artwork
Opens at 23:00PD30 / T10 Strategy
  • The Refinery opens at 23:00 and stays live until the battle ends.
  • Ranking is based on cumulative occupation time — not one unbroken streak.
  • Several short holds add together just fine.
  • Only one squad per player can be sent to the Refinery.
  • One second of occupation is enough to qualify for the ranking; where you land depends on your total time.
  • Refinery oil also counts toward your overall collection total.

Refinery Ranking Ladder

  • #1100,000 Oil
  • #280,000 Oil
  • #360,000 Oil
  • #455,000 Oil
  • #550,000 Oil
  • #640,000 Oil
  • #735,000 Oil
  • #830,000 Oil
  • #925,000 Oil
  • #1020,000 Oil

If your power supports it, the Refinery is the biggest single payout on the map. If it doesn't, skipping it is a legitimate strategy — nobody is required to feed heroes into a fight they can't win.

Should I Contest the Refinery?

Section 12

Teleport Strategy

Free teleport cooldown: 6 minutes. That's up to five free repositions per battle.

0:006:0012:0018:0024:00

During the cooldown you can still teleport, but paid jumps cost an increasing number of Advanced Teleporters: 1 → 2 → 3 → 4 → 5, up to 15 total inside one cooldown window. The paid-charge counter resets once the free cooldown finishes.

Jump 1: 1 Advanced TeleporterJump 2: 2 Advanced TeleportersJump 3: 3 Advanced TeleportersJump 4: 4 Advanced TeleportersJump 5: 5 Advanced Teleporters

Don't Camp a Dead Area

If your nearby fields are drained or swarming with rivals and your free teleport is ready, move. A fresh cluster is usually worth far more than several minutes of marching around collecting scraps.

Sections 13 & 14

Combat, Heroes & PvP Rules

Officers

  • Unlimited — Officers cannot die during Oilfield Strike.
  • Their levels equal the highest-leveled Officers in your own Squad.
  • You can keep deploying complete squads all battle long.

Officers ≠ Heroes

Translation: don't hoard your officers. Use them.

Heroes

  • Heroes are the expensive part. Lose a battle and they go into recovery.
  • Recovery is roughly 5:00 — about 3:30 with the Hero Recovery Strike Skill.
  • Five minutes is a sixth of the entire event. Stack a couple of losses together and several key heroes vanish from your line-up at once.

Know Before You Attack

  • You can attack Oilfields occupied by other players.
  • That includes fields held by your own alliance members.
  • You cannot attack another player's PD / city during the event.

Alliance Warning

Stealing oil from your own alliance is technically allowed by the game. Sort out your alliance's house rules in chat before the battle, not during the post-battle argument.

Sections 15 & 16

Scattered Oil & Defending Your Field

Scattered oil drop

Free Oil On The Ground

When a squad carrying oil gets defeated, part of that cargo spills onto the battlefield — and anybody can pick it up.

  • Scattered oil is collected by a free probe squad.
  • It does not use one of your normal squad queues.
  • Drops are worth roughly 1,000–6,000 oil each.

Rule: if you see an oil drop, grab it.

Someone Is Coming For Your Field…

One question: can you confidently win?

Yes → Defend

Hold the field, keep the oil ticking and send them home with paperwork.

No → Recall

Pull out before impact. You keep the oil you've already collected, you don't drop cargo, and your heroes stay off the injured list.

Sometimes the smartest fight is the one you don't take.

Sections 17 & 18

Chief, What's Happening?

Tap your situation for the short answer, then read the six priorities below.

Battle Just Started

Good for Everyone

Teleport toward the middle, lock onto the strongest oilfield cluster you can safely beat, send most squads to collect and keep one free for Armed Patrols.

1

Start in the Center

Stronger Players
  • Teleport toward Zone 3 and look for a workable Lv. 3 cluster.
  • Most squads gather, one squad hunts Armed Patrols for Battlefield Experience.
  • Can't beat the Lv. 3 guards? Step down to Lv. 2 rather than donating heroes to the recovery ward.
2

Never Ignore Scattered Oil

Good for Everyone
  • Your probe squad doesn't use a normal squad queue.
  • Keep it moving any time there are drops on the ground — it's free oil with zero opportunity cost.
3

Prepare for Hidden Oilfields

Good for Everyone
  • 9:00 warning → 10:00 spawn.
  • 19:00 warning → 20:00 spawn.
  • Free your squads before the spawn, not after everyone else has already grabbed the good ones.
4

Use Your Free Teleports

Good for Everyone
  • There's no prize for loyalty to a drained cluster.
  • Reposition whenever a move clearly improves your collection rate.
5

Make a Refinery Play If Your Power Supports It

PD30 / T10 Strategy
  • The Refinery opens at 23:00 and runs to the horn.
  • PD30 / T10 chiefs should absolutely contest it.
  • Lower-power chiefs should weigh the hero recovery cost before diving in — skipping it is a perfectly good plan.
6

Don't Fight Just Because You Can

Good for Everyone
  • Every PvP fight needs a reason beyond boredom.
  • If the odds are bad, recall and protect the oil you already have.

Section 19

Pre-Battle Checklist

0 / 6

Ready

Progress is saved on this device.

Section 20

Quick Decision Cheat Sheet

About to enter?

→ Teleport toward the center and find the best cluster you can safely handle.

Hidden warning?

→ Start recalling squads.

Hidden Oilfield nearby?

→ Check distance and remaining oil, then move fast if it's worth it.

Refinery open?

→ Strong enough? Go bank occupation time.

Incoming attack you can't win?

→ Recall.

Several heroes recovering?

→ Stop forcing fights and focus on collecting.

Free teleport ready and a bad location?

→ Move.

Scattered oil nearby?

→ Grab it.

Section 21

Oilfield Strike in 30 Seconds

Your rapid mission briefing.

  1. 1TeleportStart toward the center and look for the strongest oilfields you can safely capture.
  2. 2CollectMost squads gather; keep one hunting Armed Patrols for Battlefield Experience.
  3. 3Watch the Clock9:00 prepare · 10:00 Hidden · 19:00 prepare · 20:00 Hidden · 23:00 Refinery.
  4. 4UpgradeSpend Battlefield Experience on Strike Skills the moment each tier unlocks.
  5. 5MoveUse your free teleports instead of camping a depleted area.
  6. 6Don't FeedAbout to lose a field fight? Recall and keep the oil you already collected.
  7. 7Pick Up EverythingKeep your free probe squad grabbing scattered oil.

The mission: maximum Oil before 30:00.

Everything here comes from confirmed Oilfield Strike battle data. Numbers get updated as new information is verified.

Looking for more events? Head back to the Events Hub.

Optional Training

Ready for the Oilfields?

Six quick questions. Just for fun and learning.

1. What gives Battlefield Experience?

2. When do Hidden Oilfields first appear?

3. When does the Central Refinery open?

4. Which Oilfield drains in roughly 20 seconds?

5. What happens to Strike Skills next round?

6. What determines the final battle outcome?

Maximum Oil. Minimum nonsense.

Open the official source screens without cluttering your battle plan.