Science & Tech: Which Research Trees Should You Maximize First?

In Last War: Survival, buildings are your body, but Research is your brain. As you reach the mid-to-late game of 2026, research timers can stretch into months. Without a clear priority, you’ll find yourself with a high-level HQ but weak troops that fold in every battle.

To stay competitive, you must follow this 2026 "Tech Hierarchy."

1. The Foundation: Development & Economy

These are the only trees that don't require Valor Badges. They should be running in the background 24/7.

•  Development: Priority #1. Focus on the middle path to unlock Research Enhancement and Fast Builder. This permanently reduces every future timer in the game.

•  Economy: Focus exclusively on Coin Output. In the late game (HQ 27+), gold becomes the ultimate bottleneck for training high-tier troops.

2. The Game Changer: Alliance Duel (VS)

Once you join a Warzone, this tree becomes your lifeblood.

•  The Goal: Maximize this tree to earn more points during weekly VS events.

•  Must-Haves: "Advanced Rewards" and "Super Bonus." These nodes allow you to unlock all 9 reward chests easily, providing a massive influx of Diamonds and Hero Shards every week.

3. Combat Focus: Garage 1 & Special Forces

Don't spread your research across all four garages.

•  Garage 1: Max this out first. A fully researched First Squad is better than four mediocre ones.

•  Special Forces: This is the "Gatekeeper" tree. You must progress through this to eventually unlock Tier 10 (T10) troops. It is extremely Badge-heavy, so save your Valor Badges specifically for this.

4. The Hero Tree: Scaling Your Power

Hero research provides percentage-based buffs to your Attack, Defense, and HP.

•  Pro Tip: Only push this tree when your hero levels are already high. A 10% buff on a Level 150 hero is massive; on a Level 50 hero, it’s negligible.

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