How to Unlock Every New Unit in Universal Tower Defense Z Update 4

Welcome to the biggest content drop the game has seen this year. If you have been grinding away at your roster, the arrival of Universal Tower Defense Z update 4 changes everything you thought you knew about the meta. Players are already praising Universal Tower Defense Z update 4 as the most massive expansion yet, introducing a staggering 25 new units, fresh game modes, and a robust cosmetic system that allows for deep customization.

Whether you are looking to farm the elusive Unrivaled units, conquer the Reaper City Raid, or simply dress up your favorite characters in the new summer skins, this patch has something for everyone. In this comprehensive guide, we will break down exactly where to find every single new unit, how the drop rates work, and the best strategies to maximize your gem spending.

Unlocking All 25 Units in the New Expansion

The sheer volume of characters added in this patch can be overwhelming. The developers have scattered 25 new units across various banners, raids, and special game modes. Knowing exactly where to focus your energy is crucial for building a top-tier team.

According to community reports, the units are divided into several categories: Secret, Mythic, Unrivaled, and Summer Exclusives. To save you countless hours of blind farming, we have categorized the most sought-after Secret units and their exact drop locations.

Secret Units and Their Drop Locations

Secret units are some of the most powerful additions to the game, but they require completing specific, often challenging, activities.

Player experience notes that the Universal Tear has been slightly bugged for some, remaining on the "Blanco Beast" rotation instead of switching to the expected "Moonless Guy." Keep an eye on community patches for when this rotation is fully smoothed out.

The Unrivaled and Mythic Tier Roster

If you are relying on the summoning area, you will be chasing the new Mythic and Unrivaled units. The standard banner has been heavily updated with powerful additions.

Chasing the Visionary Unrivaled unit is a true test of patience. With a 0.005% drop rate, you will need incredible luck or a massive stockpile of resources. It is highly recommended to save your premium currency for when you truly need a team upgrade rather than bankrupting your account on day one.

Mastering Extractions and the Summer Event

Universal Tower Defense Z update 4 brings exciting new ways to play, specifically through the Extractions game mode and the limited-time Summer Event. These modes are not just for fun; they are the only places to secure some of the most unique crossover units in the game.

The Extractions Game Mode

The Extractions mode is where you will find units heavily inspired by popular comic book characters. This mode operates on a percentage-based drop system, making it highly farmable if you have a reliable team composition. Furthermore, the Castle of Greed within Extractions offers three additional Mythic units.

The Trickster Phantom is particularly notable because it features a generous 8-run pity system. Even if your luck is terrible, completing eight runs guarantees you the unit, making it one of the most accessible high-tier characters in the update.

Summer Event Exclusives

For a limited time, the Summer Event allows players to earn summer currency by playing the Summer Event Crate stages. This currency is vital for unlocking the two new exclusive duo units: Ash & Valkyrie, and Asura & Wrath. Both are only obtainable through the summer capsules. Make sure to grind these stages daily before the event rotates out of the game.

Skins, Crates, and Cosmetics: Dressing Up Your Roster

Beyond the gameplay mechanics, Universal Tower Defense Z update 4 introduces a massive cosmetic overhaul. There are 17 brand-new skins available, allowing you to customize your favorite units. From the highly sought-after Bunny Suit for Bulma (Legendary) to Epic Martial Artist and Student Outfits, the customization options have never been better.

To access these cosmetics, you need to navigate to the Skin UI (Units -> Skins -> Crates). Here, you can purchase various crates using either Gems or Robux.

Understanding Skin Crates and Costs

The cosmetic economy in this update is heavily reliant on Gems. While some players have voiced concerns about the premium Robux options, the game remains entirely free-to-play friendly if you are willing to grind.

Buying in bulk is a common strategy. Purchasing 100 crates will set you back roughly 1.5 million gems. While this sounds steep, veteran players who have been hoarding resources will find this a great way to show off their wealth. The premium crates do boast slightly better drop rates, but community reports suggest that standard gem crates are more than sufficient for unlocking the majority of the new looks.

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Actionable Tips for Dominating the Latest Patch

Navigating a patch of this size requires a solid game plan. Here are a few actionable strategies to help you get the most out of your playtime:

• Focus on Pity Systems First: Before gambling your resources on the 0.005% Visionary Unrivaled unit, secure the Trickster Phantom. The 8-run pity in the Expedition game mode guarantees a strong unit with minimal RNG frustration.
• Farm the Beast Desert: Act 3 of the Beast Desert is currently one of the most efficient stages to run. Not only do you get a chance at the Drill Hero Spiral, but the resource payout is excellent for funding your skin crate addiction.
• Evolve Early: If you pull the base Rukia/Bulma unit from the banner, prioritize gathering the evolution materials immediately. Ice Queen White Haze is a phenomenal crowd-control unit that will carry you through the harder Reaper City Raids.
• Manage Your Gems: At 15,000 gems per skin crate, it is easy to go broke. Set a budget for cosmetics and save the rest for future banner rotations.

By prioritizing guaranteed drops and managing your in-game economy, you will be well on your way to conquering everything this massive patch has to offer. The introduction of Synchro Drives also adds a new layer of strategy, so be sure to experiment with different unit pairings to find the optimal defensive setups.

Frequently Asked Questions (FAQ)

What is the most powerful unit in Universal Tower Defense Z update 4? While power levels depend on your team composition, the Visionary Unrivaled unit is currently considered the strongest addition in Universal Tower Defense Z update 4 due to its massive damage output, though it comes with a punishingly low 0.005% drop rate.

How do I unlock the Trickster Phantom? The Trickster Phantom is unlocked via the Expedition game mode. The best part is that it features an 8-run pity system, meaning if you complete the expedition eight times, you are guaranteed to receive the unit.

Are the premium skin crates worth the cost? It depends on your resources. Premium crates have slightly better drop rates for Legendary skins like the Bunny Suit. However, since standard crates can be purchased with gems (15,000 per crate), free-to-play players can still obtain top-tier cosmetics simply by grinding.

Where do I find the Iron Billionaire and Symbiotic Alien units? These Marvel-inspired units are located in the Extractions game mode. Iron Billionaire has a 25% drop rate, while the Symbiotic Alien (Venom) has a 15% drop rate, making them highly farmable with a good team setup.