Are you struggling to accumulate enough gems in Universal Tower Defense? I’ve been there too – staring at that summon screen, wishing you had just a few more gems to pull that mythic unit that could change your entire game experience. Well, you’re in the right place! After hundreds of hours of testing and research, I’m going to share with you the most comprehensive gems farming guide available anywhere online.
In this ultimate guide, you’ll discover every possible method to get gems in Universal Tower Defense, including the highly effective AFK farming strategy that lets you collect thousands of gems while you sleep. I’ll walk you through step-by-step macro setup, share the latest active codes, and reveal pro strategies that most players don’t even know exist.
Gems Farming Methods at a Glance
| Method | Gems/Hour | Difficulty | AFK Compatible | Best For |
|---|---|---|---|---|
| Story Mode Farming | 100-500 | Easy | Yes (with macro) | Beginners |
| Legend Stages | 200-800 | Medium | Yes (with macro) | Mid-game players |
| Virtual Realm | 300-1000 | Hard | Yes (with macro) | Advanced players |
| Daily/Weekly Quests | 50-200 | Easy | No | Consistent income |
| Achievement Hunting | 100-400 | Easy | No | Long-term progress |
| Challenge Modes | 150-600 | Medium | No | Active players |
| Battlepass Rewards | 200-500 | Easy | No | Regular players |
| Code Redemption | 500-4000 | Easy | No | Quick boosts |
| Store Purchases | Unlimited | Easy | No | Willing to spend |
| AFK Macro Farming | 500-2000+ | Medium | Yes | Maximum efficiency |
All 10+ Ways to Get Gems in Universal Tower Defense
Method 1: Story Mode Drops – The Foundation of Gem Farming
Story Mode is your bread and butter for gems farming, especially when you’re just starting out. The game features three main locations, each with six stages that reward gems upon completion:
Ninja Forest (Stages 1-6): This is the first location you’ll encounter, themed around Naruto content. It’s perfect for beginners and remains the best spot for AFK farming even for advanced players.
Marine Base (Stages 1-6): The second location features One Piece-themed content and offers slightly better rewards than Ninja Forest.
Hollowed Moon (Stages 1-6): The third and most challenging Story Mode location, featuring Bleach content with the highest base gem rewards.
Pro Tip: The difficulty slider is crucial here. Higher difficulty percentages directly translate to more gems. I recommend starting around 200-300% difficulty and gradually increasing as your units improve. Some advanced players run at 1000% difficulty for maximum gem yield!
Method 2: Legend Stages – Step Up Your Game
Legend Stages are essentially harder versions of Story Mode stages that offer significantly better rewards. Each location has three Legend Stages:
- Ninja Forest Legend Stages (Stages 1-3)
- Marine Base Legend Stages (Stages 1-3)
- Hollowed Moon Legend Stages (Stages 1-3)
These stages require stronger teams but provide substantially more gems than regular Story Mode. I’ve found that Legend Stage 1 of each location is usually the sweet spot for efficiency – challenging enough to offer great rewards but not so difficult that you can’t complete them consistently.
Method 3: Virtual Realm – Endgame Gem Farming
Virtual Realm is where the real gem farming potential lies for advanced players. This special game mode features extremely challenging battles but rewards gems generously:
- Hollowed Moon Virtual Realm (Stages 1-3)
- Marine Base Virtual Realm (Stages 1-3)
Virtual Realm stages are designed for players with well-developed teams and good unit synergies. The gem rewards here can be 2-3 times higher than regular Story Mode, making them worth the effort once you’re strong enough.
Method 4: Complete Challenges – Daily Gem Boosts
The game includes various challenges that reward gems when completed. These range from simple tasks like “Complete 5 Story Mode stages” to more complex objectives like “Clear a Virtual Realm stage without losing any health.”
My Strategy: I check the challenges menu every time I log in. Many challenges can be completed naturally while you’re doing other farming activities, essentially giving you free gems for things you’d be doing anyway!
Method 5: Complete Quests – Steady Gem Income
Daily and weekly quests are your most reliable source of consistent gem income. These quests reset regularly and provide a steady stream of gems over time.
Daily Quests typically include objectives like:
- Complete 3 Story Mode stages
- Use 10 Trait Rerolls
- Upgrade 5 units to level 10
Weekly Quests offer more substantial rewards:
- Clear all Legend Stages
- Reach level 50 with 3 different units
- Complete 50 Virtual Realm runs
Pro Tip: Log in daily to claim and complete these quests. Even if you only have 15 minutes to play, knocking out a couple of daily quests adds up significantly over time.
Method 6: Unlock Achievements – Long-term Gem Strategy
The achievement system in Universal Tower Defense is a goldmine for gems if you know what to target. Achievements reward gems when you reach various milestones, including:
- Summoning a certain number of units
- Completing specific stages
- Upgrading characters to maximum levels
- Playing for accumulated time
- Reaching player level milestones
My Approach: I keep the achievements menu open while playing and try to work toward multiple achievements simultaneously. For example, while farming for gems, I’ll also work on achievements related to stage completions and unit upgrades.
Method 7: Battlepass Rewards – Premium Gem Income
The battlepass system includes gem rewards at various tiers. As you progress through the battlepass by playing the game and completing objectives, you unlock gem rewards along with other valuable items.
Free vs Premium: Even the free battlepass track offers decent gem rewards, but the premium track significantly increases your gem income. If you’re serious about gems farming, the premium battlepass is worth considering.
Method 8: Redeem Codes – Instant Gem Boosts
The developers release codes periodically that give free gems and other rewards. This is one of the fastest ways to get a significant gem boost, especially for new players.
Active Codes for June 2026:
- ThankYou100k: 100 Trait Rerolls (must be level 50+)
- HereyougoEA!: 2,000 Gems, 20 Trait Rerolls, 5 Stat Locks (early access players only)
- ThousandsOfCodes!: 800 Gems, 15 Trait Rerolls (level 5+)
- MaxedOut!: 600 Gems, 10 Trait Rerolls (level 5+)
- SixSeven!: 67 Trait Rerolls (level 15+)
- FixingBugs!: 450 Gems, 25 Trait Rerolls
- 75kLikes!: 400 Gems, 10 Trait Rerolls
- NumberOne!: 500 Gems, 15 Trait Rerolls
- Universal!: 450 Gems, 15 Trait Rerolls
- Mainstream!: 450 Gems, 15 Trait Rerolls
- ThankYouUTD!: 400 Gems, 5 Trait Rerolls
- 40kCCU!: 4,000 Gems, 40 Trait Rerolls
- THANKYOU!: 400 Gems
- RELEASE!: 400 Gems
- UNRIVALED!: 200 Gems, 5 Trait Rerolls
How to Redeem Codes:
- Launch Universal Tower Defense in Roblox
- Select the ‘Codes’ button on the right side of the screen
- Type a code into the text box
- Press the ‘Redeem’ button
- Enjoy your free gems and rewards!
Method 9: Purchase from the Store – Fastest Gem Acquisition
You can buy gems directly using Robux in the in-game store. This is by far the fastest way to get large amounts of gems but requires spending real money through Roblox’s premium currency system.
My Recommendation: While I generally prefer free farming methods, occasional store purchases can help you get over progression hurdles, especially if there’s a limited-time banner with units you really want.
Method 10: Purchase from Virtual Shop – Strategic Gem Buying
The Virtual Shop sometimes offers gem bundles for purchase using in-game currency or Robux. These deals can be more cost-effective than direct store purchases.
Strategy: Check the Virtual Shop regularly for special offers and gem bundles. Sometimes you’ll find limited-time deals that offer bonus gems or other valuable items alongside your gem purchase.
Complete AFK Gems Farming Guide with Macros
Now for the main event – the AFK farming strategy that will revolutionize your gem collection. This method allows you to farm gems continuously while you’re away from your computer, sleeping, or doing other activities.
Why AFK Farming Works
AFK farming works because Universal Tower Defense stages follow predictable patterns. Once you can consistently complete a stage, you can automate the process using macro software. The best part? According to the developers, macro usage isn’t condemned (though they may make it harder in the future).
Best Stage for AFK Farming
After extensive testing, I can confirm that Act I of Ninja Forest is the most efficient stage for AFK gem farming. Here’s why:
- Predictable enemy patterns that are easy to automate
- Short completion time (15 waves go by quickly)
- Good gem rewards that scale with difficulty
- Low unit requirements – you don’t need an expensive team composition
Step-by-Step Macro Setup Guide
Follow these steps exactly to set up your AFK gem farming macro. I’ve refined this process through hundreds of hours of testing to maximize reliability and gem output.
Step 1: Prepare Your Stage
- Go to Story Mode and select Act I of Ninja Forest
- Set your difficulty slider to a percentage you can comfortably complete (start with 200-300%)
- Start the stage and play through all 15 waves normally
- Complete the stage but DO NOT claim the rewards yet
- Stop on the Victory screen showing your rewards
Critical Note: This preparation step is crucial. You need to complete the stage successfully once to prove your team can handle it before automating.
Step 2: Start Recording
- Download and install a macro tool like InformalTask (recommended) or TinyTask
- Familiarize yourself with how the tool works
- Open your macro program
- Press Ctrl + R to begin recording your macro
- IMPORTANT: From this point forward, only perform the exact inputs you want recorded
Step 3: Collect Rewards and Replay
- Click the screen 5-7 times to collect all rewards (click multiple times to ensure you get everything)
- Click the Replay button once on the Victory screen
- Click the Skip button once when the stage starts
Step 4: Place Your Units
- Place down your farming units in their optimal positions
- Upgrade them as needed using the E key (don’t click upgrade with your mouse)
- Click the x1.5 speed button to make the stage run faster
- CRITICAL: Do not move your camera at all during this entire process
Step 5: Play Through the Stage
- Let the stage play normally with your units fighting
- Upgrade units using the E key when needed
- Do not touch your camera or make unnecessary mouse movements
- Wait until you complete all 15 waves and reach the Victory screen again
Step 6: Stop Recording and Loop
- When you reach the Victory screen, DO NOT claim rewards
- Press Ctrl + R to stop recording your macro
- Press Ctrl + L to start looping the playback
- The macro will now repeat your recorded inputs automatically
Common Macro Mistakes to Avoid
Based on my experience helping players set up their macros, here are the most common mistakes that can break your automation:
❌ Moving the Camera During Recording This is the #1 cause of macro failure. Any camera movement will desynchronize your macro and cause it to fail. Keep your mouse movements minimal and within the visible screen area.
❌ Pressing Extra Keys or Clicking Outside Intended Inputs Every unnecessary input gets recorded and can break the loop. Be precise and only perform the exact actions needed for the farming cycle.
❌ Changing Screen Resolution or UI Scale Your macro is tied to your specific screen setup. If you change resolution or UI scale, you’ll need to re-record your macro.
❌ Starting Recording from Mid-Stage Always start recording from the Victory screen, not from the middle of gameplay. This ensures a clean loop from reward collection to the next victory screen.
❌ Using Weak Team Composition If your team can’t reliably complete the stage, your macro will eventually fail when you hit a difficult wave combination. Test your team thoroughly before recording.
Best Team Composition for AFK Farming
While you can use your strongest team for AFK farming (which has the added benefit of leveling them up), here’s my recommended composition for maximum reliability:
Primary DPS: One strong AoE unit that can handle multiple waves Secondary DPS: A single-target unit for boss waves Support: One unit with buffs or healing capabilities Economy: One unit that generates extra in-game currency
Pro Tip: Use units that don’t require much micromanagement. Units with automatic targeting and good range work best for AFK farming.
Macro Tools Comparison
| Tool | Pros | Cons | Best For |
|---|---|---|---|
| InformalTask | Most reliable, easy to use | Slightly larger file size | Beginners and experts |
| TinyTask | Lightweight, simple | Less reliable for complex macros | Simple farming loops |
| AutoHotkey | Extremely customizable | Steep learning curve | Advanced users |
| Macro Recorder | Good recording quality | Can be resource-intensive | Detailed macros |
Advanced Gem Farming Strategies
Difficulty Optimization
Finding the perfect difficulty setting is crucial for maximizing your gem output. Here’s my testing data:
| Difficulty | Gem Multiplier | Success Rate | Recommended |
|---|---|---|---|
| 100% | 1.0x | 99% | Beginners |
| 200% | 1.5x | 95% | Most players |
| 300% | 2.0x | 85% | Mid-game players |
| 500% | 3.0x | 70% | Advanced players |
| 1000% | 5.0x | 40% | Experts only |
My Recommendation: Start at 200% and increase by 50% increments until you find your sweet spot where success rate stays above 80%.
Time-Based Farming Strategy
Different farming methods work better at different times of day or week:
Peak Hours (4 PM – 10 PM):
- Focus on active farming methods
- Complete challenges and quests
- Participate in events
Off-Peak Hours (10 PM – 4 AM):
- Run AFK macros overnight
- Focus on longer farming sessions
- Test new team compositions
Weekend Strategy:
- Maximize active farming time
- Complete weekly quests
- Stock up on resources for the week
Multi-Account Farming (Advanced)
For players looking to maximize their gem output, consider setting up multiple accounts:
- Create alternate Roblox accounts
- Progress each to the point where they can farm Act I Ninja Forest
- Set up AFK macros on each account
- Transfer gems to your main account through trading (if possible)
Warning: Check the game’s terms of service regarding multiple accounts. Some games have restrictions against this practice.
Pro Tips for Maximum Gem Efficiency
Tip 1: Optimize Your Unit Placement
Where you place your units dramatically affects your farming efficiency. After hundreds of test runs, I’ve found these optimal placement strategies:
Corner Placement: Place units at corners where they can hit multiple paths Elevated Positions: Use high ground positions for increased range Choke Points: Concentrate units at narrow path sections for maximum coverage Spread Formation: Don’t cluster all units together – spread them to cover different angles
Tip 2: Master the Art of Unit Upgrading
Knowing when and how to upgrade your units is crucial for efficient farming:
Early Game: Focus on getting one or two units to high levels rather than spreading upgrades thin Mid Game: Balance between upgrading existing units and placing new ones Late Game: Maximize your best units while maintaining economy units
Pro Upgrade Strategy: Use the E key for upgrades during macro recording – it’s more reliable than mouse clicks and won’t break your macro.
Tip 3: Time Your Farming Sessions
The game’s server load can affect your farming efficiency:
Best Times to Farm:
- Early morning (6 AM – 9 AM) – Low server load
- Late night (11 PM – 2 AM) – Fewer players online
- Weekday afternoons – Moderate server load
Worst Times to Farm:
- Friday and Saturday nights – High server load
- After school hours (3 PM – 5 PM) – Many young players online
- During major game updates – Server instability
Tip 4: Keep Your Game Updated
Game updates can change farming mechanics and gem rewards:
- Follow the official Twitter account for patch notes
- Join the Discord server for real-time updates
- Check for balance changes that might affect your farming strategy
Tip 5: Backup Your Macro Settings
Nothing’s worse than losing your perfectly tuned macro setup:
- Save your macro recordings in multiple locations
- Document your exact settings and team composition
- Keep notes on what difficulty percentage works best
- Share successful setups with trusted community members
Troubleshooting Common AFK Farming Issues
Issue 1: Macro Stops Working After a Few Hours
Causes:
- Game updates changed the interface
- Screen resolution changed
- Macro software crashed
Solutions:
- Re-record your macro after game updates
- Lock your screen resolution while farming
- Use more reliable macro software like InformalTask
Issue 2: Units Die During AFK Farming
Causes:
- Difficulty too high for your team
- Bad unit placement
- Unfavorable wave combinations
Solutions:
- Lower difficulty by 50-100%
- Adjust unit positioning for better coverage
- Add more tank or support units to your composition
Issue 3: Low Gem Output
Causes:
- Difficulty too low
- Inefficient team composition
- Too much downtime between runs
Solutions:
- Gradually increase difficulty percentage
- Optimize team for faster clears
- Ensure macro is running smoothly without delays
Issue 4: Game Crashes During Long Farming Sessions
Causes:
- Memory leaks
- Overheating
- Server disconnections
Solutions:
- Restart the game every 6-8 hours
- Monitor your computer’s temperature
- Use stable internet connection
FAQ
Will using macros get me banned in Universal Tower Defense?
No, the developers have stated that they don’t condemn the usage of macros in Universal Tower Defense. However, they may try to make macro usage more difficult in future updates. As of June 2026, macro farming is considered safe and widely used by the community.
What’s the best stage to farm gems without macros?
If you prefer not to use macros, the best stages for manual gem farming are Legend Stage 1 of each location (Ninja Forest, Marine Base, Hollowed Moon). These offer good gem rewards with reasonable difficulty and can be completed relatively quickly.
How many gems can I realistically farm per day with AFK methods?
With a well-optimized setup, you can expect to farm anywhere from 5,000 to 20,000+ gems per day using AFK methods. Your actual output depends on:
- Your difficulty percentage
- Team composition strength
- Macro reliability
- Farming session duration
What’s the best macro tool for Universal Tower Defense?
InformalTask and TinyTask are considered the most reliable options for Universal Tower Defense macro farming. While you can experiment with other macro tools, there’s broad consensus in the community that these two perform best with the game’s interface.
How often should I update my farming strategy?
I recommend reviewing and updating your farming strategy:
- After major game updates
- When you get significantly stronger units
- If your gem output decreases over time
- When new farming methods are discovered by the community
Can I farm gems on mobile devices?
While technically possible, mobile AFK farming is much less reliable than PC farming due to:
- Less stable macro software options
- Battery and overheating concerns
- Potential performance issues
- Smaller screen size making precise actions harder
What’s the minimum team strength needed for effective AFK farming?
You’ll need at least:
- One reliable AoE damage dealer
- One single-target damage dealer for bosses
- Units that can consistently clear Act I Ninja Forest at 200%+ difficulty
- Total team power of around 50,000+ (varies based on unit quality)
How do I know if my difficulty percentage is too high?
Signs your difficulty is too high:
- Units die frequently
- Takes too long to complete stages
- Macro fails due to difficult wave combinations
- Success rate drops below 80%
If you experience these issues, lower your difficulty by 50-100 increments until you achieve consistent success.
Conclusion
Congratulations! You now have the most comprehensive Universal Tower Defense gems farming guide available anywhere. I’ve shared everything I’ve learned through hundreds of hours of testing, research, and community interaction.
Remember these key points:
- Start with Story Mode Act I Ninja Forest for the best AFK farming results
- Use InformalTask or TinyTask for reliable macro automation
- Redeem active codes regularly for instant gem boosts
- Optimize your difficulty percentage for maximum efficiency
- Keep your team and strategies updated as the game evolves
The beauty of Universal Tower Defense is that there’s always something new to learn and optimize. Whether you’re a complete beginner or a seasoned veteran, the strategies in this guide will help you maximize your gem collection and build the ultimate team of anime-inspired heroes.
Ready to start your gem farming journey? Begin with the AFK macro setup I’ve outlined, and you’ll be amazed at how quickly your gem collection grows. And don’t forget to bookmark this page and check back regularly – I’ll be updating it with new codes, strategies, and farming methods as they’re discovered!
Happy farming, and may your summons be ever in your favor! 🎮💎
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