Research Trees Explained - Tech Overview

Last War: Survival Game
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:brain: All Research Trees Explained - Tech Center Overview

In Last War: Survival, the Tech Center is one of the most powerful tools at your disposal. Beyond just buildings and troop numbers, your tech level determines how efficient, powerful, and sustainable your growth will be. As an experienced player, understanding each tech tree in detail is essential for dominating both PvE and PvP scenarios.

:wrench: 1. Development Tree

Focus: Base efficiency and infrastructure

Important Research Items:

  • Research Enhancement – Speeds up all other tech research.
  • Fast Builder – Reduces construction time for buildings.
  • Master Craftsman – Cuts down resource costs for construction.
  • Extra Barracks – Increases the number of simultaneous troop training queues.
  • Drill Ground Expansion – Boosts training capacity and speed.

Pro Tip: This tree lays the foundation for your entire progression. Focus on it early to accelerate everything else.

:money_bag: 2. Economy Tree

Focus: Resource generation and base sustainability

Important Research Items:

  • Coin/Food/Iron Output – Increases passive resource generation.
  • More Farmlands/Iron Mines/Gold Mines – Expands your capacity to build resource structures.
  • Resource Gathering Speed – Improves efficiency when collecting from world map resource nodes.

Pro Tip: Prioritize output and production boosts over gathering speed unless you’re heavily involved in farming events.

:superhero: 3. Hero Tree

Focus: Enhancing your heroes’ combat stats and utility

Important Research Items:

  • Damage Boosts – Increases the base damage of your heroes.
  • Attack/Defense/HP Buffs – Improves survivability and performance in battles.
  • Advanced Hero Skills – Unlocks or enhances specific abilities in combat.

Pro Tip: Aim to fully unlock the final rows for the biggest stat increases. This tree is crucial for hero-heavy battles and boss fights.

:military_helmet: 4. Units Tree

Focus: Improving troop strength, training efficiency, and unlocking tiers

Important Research Items:

  • Training Speed – Reduces the time needed to train troops.
  • Troop Attack/Defense/HP – Fundamental for PvP and PvE combat.
  • Tier Unlocks – Grants access to higher-tier units as you progress.

Pro Tip: Keep this tree developing alongside your Hero tree. Balanced investment ensures your army can support your heroes effectively.

:bullseye: 5. Special Forces Tree

Focus: High-tier combat effectiveness and unlocking Tier 10 troops

Important Research Items:

  • Damage Reduction – Essential for survivability in high-level battles.
  • Morale Boosts – Enhances combat endurance and strength.
  • Tier 10 Unit Unlocks – Top-tier troops with superior stats.

Pro Tip: This is your late-game powerhouse tree. Once your Unit and Hero trees are well-developed, invest here to reach top-tier strength.

:handshake: 6. Alliance Duel (VS) Tree

Focus: Boosting performance in Alliance Duel and related events

Important Research Items:

  • Advanced Rewards – Increases event loot and rankings.
  • Duel Expert / Duel Master – Improves effectiveness in Duel-based content.
  • Super Bonus – Provides extra perks during special event windows.

Pro Tip: Completing the majority of this tree greatly increases your rewards during Alliance events. Strong return on investment during competitive seasons.

:articulated_lorry: 7. Intercity Truck Tree

Focus: Enhancing the rewards and efficiency of Intercity Truck missions

Unlock Requirement: Requires substantial progress in the Alliance Duel tree

Important Research Items:

  • Truck Speed & Capacity – Improves mission turnover rate and rewards.
  • Bonus Drop Rates – Increases the chances of premium item drops.

Pro Tip: A high ROI tree for long-term passive gains, especially when events are aligned with truck deliveries.

:hammer_and_wrench: 8. Garage Trees (1, 2, 4)

Focus: Personal hero stat bonuses across your entire roster

  • Garage 1: Provides early boosts to hero HP, defense, and attack to 1st Squad
  • Garage 2: Provides boost to 2nd Squad
  • Garage 3: Provides boost to 3rd Squad
  • Garage 4: Exclusive to premium users (Monthly Pass), provides boost to 4th squad

Pro Tip: Keep Garage 1 and 2 up to at least 25-30% completion as you progress. They’re among the few trees with passive bonuses that impact nearly every aspect of battle.

:oil_drum: 9. Age of Oil Tree

Focus: Late-game progression, resource management, and base upgrades

Unlock Requirement:

  • Tech Center must be Level 30
  • Special Forces tree must be ~40% completed

Important Research Items:

  • Oil Well / Oil Output – Introduces and scales a new critical resource.
  • HQ Expansion – Prerequisite for upgrading HQ to Level 35.
  • Oil Efficiency / Storage – Helps manage oil costs and capacity.

Pro Tip: This is your gateway to end-game progression. Start prepping this tree early once you hit HQ 30, as oil becomes a bottleneck for further upgrades.

Final Thoughts

Mastering the Tech Center in Last War: Survival is what separates a good commander from a great one. While buildings and troops are important, your research choices determine how fast you grow, how well you fight, and how efficient your base becomes over time. For experienced players, the right research path means outpacing and outlasting your competition.

Be strategic, be consistent, and always align your research with your gameplay goals.

:books: More in this series: