Season 5 of Dark War Survival introduces the Miasma Virus, a new mechanic that completely changes how players interact with world map zombies, cities, and neighboring shelters. Understanding how the virus stacks, resistance system, and spread mechanics work is essential to progress efficiently and unlock all new achievement rewards.
This guide breaks down everything — from virus resistance, buildings, and infection spread to achievement farming — so you can make the most of Season 5’s new meta.
Dark War Survival Miasma Virus System Guide (Season 5)
After surviving previous seasonal disasters (Desert and Frozen Wasteland), players now face a toxic, spreading virus that affects every aspect of gameplay — combat, construction, and exploration.
The virus spreads through attacks, infected shelters, and the environment, requiring careful resistance management.
1. Virus Resistance System
How It Works
- Virus Resistance is the new Season 5 version of past resistance systems (like Cold Resistance).
- It determines how much damage your troops can deal in infected zones or against infected enemies.
| Resistance Comparison | Damage Penalty |
|---|---|
| Equal to Requirement | 0% |
| 400 vs 1000 Required | -60% Damage |
| 1500+ (vs Lvl 1 City) | Full Damage Output |
Tip: You can still win even with lower resistance if your troop Combat Power (CP) is strong enough, but efficiency drops dramatically.
2. Virus Resistance & City Capturing
To capture seasonal cities, players must meet the minimum Virus Resistance requirement:
- Level 1 City: 1,500 Virus Resistance
- Higher-level cities require proportionally higher resistance values.
If you attack below the requirement, you’ll not only deal less damage but risk infecting your shelter with Miasma stacks (explained later).
3. Season Buildings & Resources
Key Building: Oni Seal Hall
- The main structure for increasing Virus Resistance.
- Must be constructed and upgraded regularly to maintain parity with world map progression.
How to Upgrade
- Requires Quartz and Stone (Season resources).
- Quartz: Produced in Quartz Factories or obtained via missions.
- Stone: Cannot be produced. Earned from:
- Zombie first-kill rewards
- Season Pass
- Miasma Achievement rewards
Weekly Pass Bonus: +250 Virus Resistance, +20% Zombie March Speed, and +1 extra Quartz Factory.
4. Understanding the Miasma Virus System
Shelter Infection
- Your shelter can get infected through combat, spreading, or events.
- Tap the virus icon in your UI to open the Miasma Page, where you’ll see:
- Current number of Miasma Stacks
- Timer showing how long until the infection purifies naturally
Stack Behavior
- Miasma stacks cause debuffs that worsen as they increase.
| Stack Level | Effect |
|---|---|
| 20 Stacks | -2.5% Troop Damage |
| 40 Stacks | Shelter light disabled |
| 100 Stacks | Shelter destroyed + random teleport (after 30s) |
When your shelter reaches 100 stacks:
- It self-destructs, teleporting to a random map location.
- All nearby shelters get 25 stacks of infection.
- Your own stacks reset to 0.
5. Earning and Using Miasma Stacks
How to Get Stacks
- Fighting Zombies with Low Resistance
- The infection chance equals your damage reduction percentage.
- Example: If your troop’s damage is reduced by 60%, there’s a 60% infection chance.
- Each 10% reduction = 1 Miasma Stack.
- (e.g., 60% → 6 stacks)
- Attacking Shelters
- The losing side gains stacks after the battle.
- Blood Moon Event
- Automatically infects all shelters with 40 stacks.
Light Mechanics
- Shelter Light ON: Reduces infection chance when attacking.
- Shelter Light OFF: Increases stack gain (useful when farming achievements).
- Light can’t be turned on if stacks exceed 40.
6. Achievement Rewards & Miasma Farming
You’ll want to intentionally gain and manage virus stacks to complete achievements that give free resources, tickets, and stones.
Key Achievements
| Achievement | Requirement | Rewards |
|---|---|---|
| Infection Initiation | Reach 100 Miasma Stacks | Recruitment Ticket, Boost Ore, Stone |
| Purification Expert | Purify 300 Miasma Stacks | Boost Ore, Quartz |
| Viral Spread | Spread 500 Miasma Stacks | Resource Crates, Stones, Season Points |
How to Complete Achievements Fast
Step 1 – Infect Your Shelter
- Deliberately attack higher-level zombies with low resistance.
- Disable your shelter light to increase infection rate.
Step 2 – Spread Miasma
- Position your shelter near 7 neighboring shelters.
- When you hit 100 stacks, your shelter explodes — spreading 25 stacks to each nearby shelter (175 total per explosion).
Step 3 – Purify the Stacks
- After destruction, teleport back to your spot.
- Send scouts to purify your allies’ shelters and reduce stacks.
- Each purification contributes to the achievement total.
Pro Tip: Disable ally healing during the process to stack faster. Once you’re done farming, turn it back on to let others help you clear stacks.
7. Purification Mechanics
- Miasma naturally decays over time based on the timer in your virus menu.
- Scouts can also purify ally shelters to reduce their stacks faster.
- You can only purify if the stacks are gray (meaning healing is enabled).
- Efficient coordination between alliance members can speed up reward farming drastically.
8. Destruction and Teleport Cycle
When your shelter reaches 100 stacks:
- A 30-second countdown starts.
- Your shelter explodes, resetting to 0 stacks.
- Nearby shelters each gain 25 stacks.
- You’re teleported to a random location.
- You can relocate back and repeat the spread-purify loop to farm achievements quickly.
9. Virus Resistance Farming & Building Tips
- Focus early Quartz and Stone on Oni Seal Hall upgrades — resistance equals survival.
- Keep your Virus Resistance ahead of zone requirements to prevent unnecessary infection.
- Stack Weekly Pass buffs before large zombie or city assaults.
- Maintain a balanced alliance zone — don’t cluster too tight when everyone’s farming Miasma.
The Miasma Virus system in Season 5 of Dark War Survival adds a unique layer of risk, reward, and alliance strategy.
It’s both a punishment mechanic and a farming opportunity — players who manage their infection cycles smartly can earn massive Stone, Quartz, and tickets far faster than passive players.
