Unlocking powerful units is the key to dominating waves in Universal Tower Defense Z. If you’re wondering universal tower defense z how to get units, you’re in the right place. This guide covers every method to obtain units in the latest update, from secret drops to banner summons, so you can build the strongest defense possible.
With Update 4 adding over 20 new units, knowing exactly where to farm each one can save you hours of grinding. We’ve analyzed player experiences and official sources to bring you a complete breakdown of unit acquisition methods, drop rates, and farming strategies.
Understanding Unit Rarities in Universal Tower Defense Z
Before diving into specific locations, it helps to understand the different unit rarities available. According to the official wiki, units in UTDZ come in the following tiers, each with unique acquisition methods:
| Rarity | Description | Typical Acquisition |
|---|---|---|
| Boundless | Evolutions of Secret units with increased level cap | Evolve specific Secret units |
| Synchro | Fused units obtained by Synchro Driving two units in range | Synchro Drive mechanic |
| Unrivaled | Evolutions of Mythic units with new passives and visuals | Evolve specific Mythic units |
| Exclusive | Limited-time event or Battle Pass units | Events, Battle Pass, shop |
| Secret | Rare units from specific stages or game modes | Story stages, raids, expeditions |
| Mythic | High-rarity units from banners or certain stages | Banners, some game-mode drops |
| Legendary | Mid-tier units available from all banners | Summoning |
| Epic | Lower-mid rarity units from all banners | Summoning |
| Rare | Common units from all banners | Summoning |
The majority of endgame strategies revolve around Mythic, Secret, and Exclusive units, so let’s focus on how to obtain those.
How to Get Secret Units in Update 4
Secret units are among the most valuable in Universal Tower Defense Z. Based on community reports from the big Update 4 rollout, there are at least nine new Secret units to collect. Below is a detailed location guide:
| Unit Name | Source | Drop Rate / Requirement | Player Tips |
|---|---|---|---|
| Drill Hero Spiral | Beast Desert, Stage Act 3 | Complete final stage | Farm the hardest difficulty for best chance |
| Ice Queen Evo (White Haze) | Evolve Rukia from banner | Requires Rukia (banner summon) | Check if you have the base form first |
| Flame Captain Embers (Yamamoto) | Reaper City Raid, last stage | Stage completion | Bring strong AoE units for the boss wave |
| Light Prince Ascension | Hollow Destroyer vs Reapers mode | Clear the mode | Early reports say it’s a rare drop |
| King (Yuhabach) | Universal Tear (Rift) | Complete the rift | Use healers to survive sustained damage |
| Human Spider (Spider-Man) | Extractions game mode | ~95% drop rate | Very common; farm this for coins too |
| Iron Billionaire (Iron Man) | Extractions game mode | ~25% drop rate | Moderate grind; team up with friends |
| Symbiotic Alien (Venom) | Extractions game mode | ~15% drop rate | Toughest of the trio; be patient |
| Trickster Phantom | Expedition game mode | 8-run pity system | You’re guaranteed after 8 completions |
| Visionary Unrivaled | Summon area (banner) | 0.005% chance | Extreme rarity; not worth chasing unless you’re a collector |
Most Secret units are obtained through specific game modes, so focus your time on the ones that interest you. The Extractions mode is particularly rewarding because it offers three Secret units in one place.
Mythic Units: From Banners and Beyond
Update 4 introduced nine new Mythic units. According to player experience, the majority come from the current banner rotation, but three are hidden in a specific game mode.
Banner Mythic Units
These six to seven Mythic units are available through the regular summon system. The exact pool may rotate, but based on video coverage, expect to find:
- Body Captain
- The Terror
- Cat Captain
- Zombie Apostle (also called Corpse Maiden)
- Fatality
- Visionary (technically Unrivaled but often grouped with Mythics)
| Unit | Summon Type | Estimated Chance |
|---|---|---|
| Body Captain | Regular banner | Low (Mythic rates) |
| The Terror | Regular banner | Low |
| Cat Captain | Regular banner | Low |
| Zombie Apostle / Corpse Maiden | Regular banner | Low |
| Fatality | Regular banner | Low |
| Visionary (Unrivaled) | Regular banner | 0.005% |
Game-Mode Mythic Units
Three additional Mythic units are obtainable only from the Extractions game mode, specifically by completing the Castle of Greed sub-mode. The names of these units haven’t been fully confirmed yet, but community reports confirm they are real. Rumor has it they include a tank, a DPS, and a support unit.
“The Castle of Greed in Extractions is where you can get three extra Mythic units,” according to a popular UTD content creator. “Just keep running the mode and you’ll eventually see them drop.”
Exclusive Units and Seasonal Events
Temporary events are a great source for exclusive units. In the latest summer event, players can unlock units only available through summer capsules.
| Exclusive Unit | Event | How to Obtain |
|---|---|---|
| Ash and Valkyrie | Summer Event | Open summer capsules with event currency |
| Asura and Wrath | Summer Event | Open summer capsules with event currency |
To earn summer currency, play the Summer Event game mode. The more you play, the more capsules you can open. These are likely to be limited-time only, so prioritize them during the event.
In addition, the update introduced skin crates that can be purchased with gems or Robux. While skins don’t affect gameplay, they do show off your collection. A premium skin crate gives better drop rates for rare skins, but you can earn basic skins through the calendar event shop as well.
Other Acquisition Methods: Portals, Raids, and Story Mode
Beyond the new content, Universal Tower Defense Z offers several permanent ways to get units:
- Story Mode: Complete stages for guaranteed unit drops (especially lower rarities)
- Portals: Challenge bosses for a chance at rare loot
- Raids: Team up with other players to take down raid bosses; Reaper City Raid is one example that drops Secret units
- Battle Pass: Unlock exclusive units by leveling up the pass
- Banners: The classic summon system, with Legendary, Epic, and Rare fillers
For a steady supply of materials, run story missions and portals daily. Save your gems for banner draws if you’re aiming for specific Mythic units.
Tips for Efficient Unit Farming
To maximize your time when learning universal tower defense z how to get units, keep these strategies in mind:
- Focus on one game mode at a time. Spreading your runs across too many modes will slow progress on any single unit.
- Team up with friends. Game modes like Extractions and Raids are faster and more reliable with a coordinated group.
- Use the correct team composition. For example, bring AoE units for Reaper City Raid and healers for the Universal Tear.
- Check the pity systems. Expedition has an 8-run pity for Trickster Phantom; Extractions have fixed drop rates for the Spider-Man trio.
- Save currency for limited events. Exclusive units often rotate out, so stockpile event currency ahead of time.
Efficiency is especially important for low-drop-rate units like Visionary (0.005%) and the Castle of Greed Mythics. These are long-term goals – don’t burn out trying to force them.
Frequently Asked Questions About Getting Units
What is the fastest way to get Secret units in Universal Tower Defense Z?
The fastest Secret units to obtain are the Extractions trio: Human Spider (95% drop), Iron Billionaire (25% drop), and Symbiotic Alien (15% drop). You can farm all three in the same mode. For higher-rarity Secrets like King (Yuhabach), you’ll need to complete the Universal Tear rift, which takes more time.
Can I get Mythic units without spending Robux?
Yes. Mythic units appear in the regular banner that uses in-game currency earned from playing. Additionally, you can farm three Mythic units from the Castle of Greed sub-mode in Extractions without any premium currency. The Summer Event also gives exclusive units for free by playing.
How do I evolve my units to Unrivaled or Boundless?
Evolution requires specific base units and materials. For example, Ice Queen Evo (White Haze) comes from evolving Rukia, which you can obtain through the banner. Boundless units require a fully upgraded Secret unit plus special items. Check the in-game index for evolution recipes.
Is there a pity system for banners in Universal Tower Defense Z?
The game does not advertise a formal pity system for banners, but some game modes have a pity mechanic. The Expedition mode, for instance, guarantees Trickster Phantom every eight runs. For banner units like Visionary, there is no guaranteed drop, so treat them as long-term projects.
Now you have a complete roadmap for universal tower defense z how to get units in Update 4. Bookmark this guide and refer back to the tables whenever you need a reminder. For the latest patch notes and community discussions, visit the official Universal Tower Defense Z Roblox page to stay updated on new units and events. Happy farming!