STATE OF SURVIVAL RESEARCH GUIDE
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Uncover the detailed overview of all the research and enhancements in Resident Evil Survival Unit and how to get them. Make the most of your survival strategy with our comprehensive guide.
This article doesn't promote guaranteed success in gameplay, but your chances of conquering the state of survival increases manifold with the right research and enhancements.
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RESEARCH FOCUS
Resident Evil Survival Unit Research Guide – Best Research Order & Strategy
Research is one of the most powerful progression systems in Resident Evil Survival Unit. Done correctly, it speeds up construction, reduces costs, strengthens troops, and saves you days or even weeks of time over the life of your account.
This guide explains how research works, which trees to prioritise, and the best research strategy for beginners, free-to-play players, and spenders.
Why Research Is So Important
Research provides permanent account-wide bonuses, including:
Faster building and training speeds
Reduced resource costs
Stronger troops and formations
Higher hospital capacity
Improved defence and attack stats
Unlike buildings or troops, research benefits everything you do — making it one of the highest-value investments in the game.
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Research Lab Overview
All research is conducted in the Research Lab, which must be upgraded to unlock higher research tiers.
Key Research Costs
Time
Resources
Rare Earth
The Research Lab also increases:
Base research speed
Access to advanced technologies
Upgrading the Research Lab early is essential for long-term efficiency.
The Three Research Trees Explained
Resident Evil Survival Unit has three main research trees:
🧱 Development Tree – Highest Priority
The Development tree should be your first and biggest focus, especially early game.
What It Improves
Building construction speed
Research speed
Hospital and ICU capacity
Training efficiency
March slots
Why It Comes First
Every upgrade here makes all future progress faster and cheaper. Skipping development research slows your entire account.
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💰 Economy Tree – Second Priority
The Economy tree focuses on sustainability and resource efficiency.
What It Improves
Resource production
Resource gathering speed
Reduced upgrade costs
Storage efficiency
This tree is especially valuable for free-to-play and light spenders, as it reduces dependency on purchases.
RESEARCH ACADEMY
⚔️ War Tree – Long-Term Investment
The War tree focuses on combat effectiveness.
What It Improves
Troop attack and defence
HP and damage bonuses
Formations and penetration stats
PvP and rally effectiveness
While important, war research should usually come after development and economy unless you are heavily focused on PvP early.
Best Research Order (Beginner Friendly)
For most players, this order works best:
Development – Speed and efficiency
Economy – Sustainability
War – Combat power
This approach gives faster growth, fewer losses, and better event performance.
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Research Strategy for Free-to-Play Players
Free-to-play players should:
Focus heavily on Development and Economy
Avoid rushing War research early
Save speed-ups for research events
Use daily quests for time reductions
Efficiency matters more than raw power
Research Strategy for Spending Players
Spending players benefit most by:
Maxing Development early
Timing research with power events
Using speed-ups strategically
Unlocking advanced War research sooner
Even with spending, poor research order wastes value.
Using Quests to Reduce Research Time
Daily and rotating quests often reward:
Research time reductions
Speed-ups
Bonus resources
These quests refresh frequently and should always be completed if possible — they provide free efficiency boosts.
How Rare Earth Affects Research
Rare Earth is a key research resource earned from:
Exploration vehicle
Events
Passive rewards
Pro Tip
Collect Rare Earth frequently — storage caps quickly, and overflow is wasted.
When to Use Speed-Ups on Research
Best times to use research speed-ups:
During research-focused events
When completing long, high-impact upgrades
To unlock key development milestones
Avoid using speed-ups randomly outside of events.
Common Research Mistakes to Avoid
❌ Ignoring Development research
❌ Rushing War research too early
❌ Letting Rare Earth overflow
❌ Using speed-ups without event bonuses
❌ Spreading research across all trees at once
Avoiding these mistakes alone will significantly improve progression speed.
How Research Impacts Events & Rankings
Research contributes to:
Combat power growth
Event milestone rewards
Ranking-based event placement
Well-timed research upgrades can score large event points with minimal effort.
Final Thoughts
Research is the backbone of success in Resident Evil Survival Unit. Strong research choices reduce grind, save resources, and make every other system more powerful.
Build smarter, not harder — and your account will thank you.
More guides coming soon, including:
Advanced War research builds
PvP vs PvE research priorities
Event-optimised research paths
Because in Resident Evil Survival Unit, knowledge is power. 🧠🧟♂️