The Empty Wallet Feeling

You boot up the game. You hear that chill lo-fi music playing in the background. Your proxy character is standing in the video store. You open the signal search menu, hoping to pull that brand new S-Rank agent everyone is talking about.

You hit the button. The TV screens flash. But instead of that beautiful golden glow, you see purple. Or worse, blue. You just got another B-Rank W-Engine that you already have fifty copies of. And just like that, your premium currency is completely gone.

We have all been there. Honestly, it is the worst feeling in gacha games. You save up for weeks, you do all your daily chores, and you still lose the 50/50. Now you are staring at a banner that goes away in three days, and your wallet is empty.

This is why you need free stuff. The developers drop text promos regularly to keep the community happy. These promos give you the exact currency you need to squeeze out a few more pulls before a limited banner disappears. If you want to survive the streets of New Eridu without spending your whole paycheck, you have to stay on top of these drops.

How the Economy Actually Works

Before you start typing things into the menu, you need to understand what you are actually getting. The economy in this game is split into a few different currencies. Some are easy to get, and some are incredibly rare.

Here is a quick breakdown of what you actually care about:

• Polychromes: This is the premium stuff. It looks like glowing rainbow gems. You use this to buy Master Tapes. This is the main thing you want from promos.
• Master Tapes: There are two kinds. Encrypted ones are for the limited character banners. Standard ones are for the permanent banner. Always prioritize the Encrypted ones.
• Dennies: This is the basic cash used in the city. You need millions of Dennies to level up your agents, upgrade their skills, and enhance their gear.

Getting a few hundred Polychromes for free can literally save your account. It takes days of grinding quests to earn that much naturally.

The Active List for This Month

Finding text that actually works is a huge headache. You search online, find a video, sit through a long intro, and then find out the promo expired a month ago. I hate that.

Here is what is actually working right now. Keep in mind, the developers turn these off without warning. Sometimes they drop one for a live stream, and by the next morning, it is completely gone. You have to be fast.

The Promo	What You Get	Status
ZENLESSGIFT	50 Polychromes, 2 Official Investigator Logs	Active
ZZZ2026	300 Polychromes, 30,000 Dennies	Active
CATCHABOO	3 Boopons, 10,000 Dennies	Active
NEWERIDUFUN	50 Polychromes, 1 W-Engine Power Supply	Active
PROXYLIFE	100 Polychromes, 20,000 Dennies	Active

If you take those Polychromes and dump them into the signal search right now, you might just get lucky. It completely changes how you play the game when you pull a top-tier damage dealer.

How to Claim Your Free Loot

You have the text. Now what? The menus can be a bit overwhelming if you are a beginner. There are buttons for agents, equipment, the compendium, and the shop all fighting for your attention.

You have two ways to get your loot. You can do it inside the game, or you can do it on your phone through the official website.

Here is exactly how you do it in the game:

• Open the main menu by pressing escape on your keyboard or tapping the top left icon on your phone.
• Click on the “More” button. It usually looks like a little gear or a menu icon.
• Select the “Redemption Code” option.
• A text box will pop up. Type your text exactly as you see it in the list above. Pay attention to capital letters.
• Hit the redeem button.

If it works, you will not get the items instantly in your inventory. You have to open your in-game mailbox. Check the mail, hit claim all, and you will hear a nice cash sound effect.

Why You Keep Getting Error Messages

Sometimes you hit enter and you get a red invalid message. It is super frustrating. You might think the list is fake, but usually, there is a simple reason.

The most common issue is a typo. These systems are strict. If the word is all capital letters, you have to use caps lock. If you accidentally put a space at the end of the word because you copy-pasted it from a website, the game will reject it.

If you typed it perfectly and it still fails, it is expired. The developer hit their player goal, or the weekend event ended. It happens. You just have to move on and wait for the next one.

Sometimes the servers just lag. If a huge patch just dropped, thousands of people are trying to claim rewards at the exact same time. The database gets overloaded. Wait ten minutes and try again. Do not spam the button, or the game might time you out.

The Graveyard of Old Drops

It always stings when you miss a really good drop. The developer does special live streams every six weeks to announce the next patch. During those streams, they drop three promos that give 300 Polychromes total. But they expire in less than 24 hours.

Here is a look at what recently died. Do not try typing these in. They will just give you an error and waste your time.

Old Text	What It Used To Give	Why It Left
TOURDEINFERNO	300 Polychromes	Livestream ended
WINTERPROXY	100 Polychromes	Holiday event over
HOYOFEST2025	50 Polychromes, 10,000 Dennies	Festival ended
SORRYFORBUGS	200 Polychromes	Servers got fixed
HALFMILSTONE	10 Master Tapes	Milestone passed

Seeing that list just proves you have to pay attention. You cannot just play the game once a month and expect to get all the free stuff. You have to stay engaged with the community.

Strategy: Do Not Waste Your Pulls

Okay, you claimed your zenless zone zero codes. You have a pile of Polychromes. The immediate instinct is to run to the TV screens and spend them all right away. Stop.

This is where a lot of players ruin their accounts. You need a strategy if you want to get good characters without spending real money.

Never spend Polychromes on the Standard Channel. The game gives you regular Master Tapes just for leveling up and playing the story. Use those free tapes for the standard banner. Save every single Polychrome for the Exclusive Channel. Limited characters are always stronger and have cooler animations.

Look at the current limited banner. Do you actually need that character? If you already have two strong fire damage dealers, you probably do not need a third one. Save your currency for a stun character or a support character to round out your teams.

Understanding Pity and the Coin Flip

If you are new to this type of game, you need to understand how the pity system works. It protects you from having terrible luck forever.

You are guaranteed to get an S-Rank character within 90 pulls. This is called hard pity. Most of the time, you will get one around 75 pulls. This is called soft pity. The game slightly increases your chances once you hit that 75 mark.

But there is a catch. When you see that golden animation, there is only a 50 percent chance it is the featured limited character. This is the infamous 50/50. If you win, great. You got the character you wanted. If you lose, you get one of the standard S-Rank characters instead.

If you lose the 50/50, your next S-Rank is 100 percent guaranteed to be the featured character. This guarantee carries over between banners. So if you lose your flip on a character you kind of wanted, you can stop pulling and save that guarantee for a character you absolutely must have later on.

Building a Team That Actually Works

Having a cool S-Rank agent is nice, but if your team makes no sense, you will struggle in the harder content. You cannot just throw three damage dealers together and expect to win.

Team building revolves around factions and elements. If you put two agents from the same faction together, or two agents with the same element, their passive abilities turn on. These passives are huge. They give massive damage boosts or extra energy regeneration.

For example, if you run a team with characters from Victoria Housekeeping, they buff each other. A standard good team needs an Attack agent to deal damage, a Stun agent to break the enemy’s shield, and a Support agent to give buffs.

You switch to your Stun agent, hit the boss until the daze bar fills up, and then trigger a chain attack. Then your Attack agent comes in and deals massive damage while the boss is stunned. If you just mash buttons without stunning the boss first, fights take ten times longer.

The Gear Grind: Disk Drives

Once your characters are max level, the real nightmare begins. You have to farm Disk Drives. These are essentially pieces of armor that give you random stats.

You go to the music store and spend your materials to roll for discs. You want things like Critical Rate, Critical Damage, and Attack Percentage. But the game loves to give you Defense and Health instead.

It is a constant grind. You might spend a week’s worth of battery charge just to get one decent disc for your main damage dealer. Do not stress out about getting perfect stats right away. Just get the correct main stat on the disc and level it up. You can worry about perfect sub-stats months down the line.

Also, make sure you match the set bonuses. Equipping four pieces of a Woodpecker Electro set gives you a specific buff. Read the descriptions and match the sets to the character’s role.

Bangboos: Your Little Robot Friends

You cannot forget about your Bangboo. These little bunny-robot things follow you into the Hollows and actually help in combat.

You do not use Polychromes to get them. You use Boopons. The game gives you Boopons for completing Hollow Zero runs and events. The best part? The Bangboo banner has no 50/50. You select the S-Rank Bangboo you want, and when you hit pity, you are guaranteed to get it.

Make sure you pick a Bangboo that matches your team. If you are running an electric team, pick the electric Bangboo. It will apply extra shock buildup to enemies, which helps you trigger anomaly effects faster.

What to Do When the Free Stuff Runs Out

Eventually, you will use all the active text drops. You will have a dry spell. Now you actually have to play the game to earn your currency.

The fastest way to earn cash is just pushing through the main story, but that eventually ends. So you need a routine.

Every morning, you should check your video store. The Random Play store generates passive Dennies. Keep your VHS tapes stocked, promote the store, and collect your money. It takes thirty seconds.

Then, buy a coffee. The coffee shop gives you a specific buff for farming materials and gives you 60 extra battery charge. Never let your battery charge sit at the maximum limit. If it is full, you are wasting free energy.

Finally, scratch your daily lottery ticket at the dog stand. It usually gives you a tiny amount of Polychromes, but occasionally you get lucky and win a larger amount. It all adds up.

Tackling Hollow Zero

Hollow Zero is the roguelike mode of the game. It resets every week. You have to go in here if you want to progress your account.

You start at level one and pick up random buffs called Resonia as you move across the TV screens. The combat gets harder as you go deeper. If you build a bad team, you will get wiped out by the final boss.

The trick is to focus on one specific type of Resonia. If you keep picking critical hit buffs, they eventually combine into an advanced buff that melts enemies. Do not just pick random buffs. Have a plan.

Finishing your weekly bounties in Hollow Zero gives you Boopons and materials to upgrade your Bangboos. It is non-negotiable. You have to do it every week.

Shiyu Defense: The Endgame

When you think you are strong, you step into Shiyu Defense. This is a time attack mode. You have to defeat a series of bosses as fast as possible.

The faster you clear it, the higher your rank. An S-Rank clear gives you the maximum amount of Polychromes. But the enemies here are incredibly tanky. They have massive health pools and hit like trucks.

You will need two fully built teams to clear the later stages of Shiyu Defense. That means six characters, completely leveled up, with good weapons and decent disk drives. This is why you cannot waste your resources early on. If you spread your materials too thin across ten different characters, you will not have two strong teams.

Focus on your two main damage dealers first. Get them to the level cap. Then worry about your stunners and supports.

Avoiding the Classic Scams

Because this game is so popular, scammers are everywhere. You have to be careful. If an offer looks way too good to be true, it is a scam.

You will see YouTube Shorts showing a guy typing a weird script into the chat box, and suddenly he has infinite Polychromes. It is completely faked. They edit the video.

Then they tell you to click a link in the description to get the real script. Do not do it. That link will take you to a fake login page and steal your Hoyoverse account.

Here are the biggest red flags to watch out for. Websites that ask you to download a browser extension to generate rewards are giving you a virus. Discord users offering to top up your account for half price will use stolen credit cards, which will get your account permanently banned.

Just use your common sense. The developers do not hand out infinite money. It would ruin their game.

Where to Find New Drops Fast

You want to be the first person to get the free stuff. Waiting for a random website to update can be too slow, especially for livestream drops that expire in hours.

You have to go straight to the source. The developers drop hints all the time if you know where to look.

• The Official Discord Server: This is mandatory. Yes, the general chat moves at a million miles an hour and is full of spam. Mute it. Find the official announcements channel and turn on notifications. That is where the real info drops.
• The HoYoLAB App: This is the official companion app for the game. If you log in there every day, you get daily check-in rewards. They also post all official announcements and events there first.
• Livestreams: Every six weeks, they host a stream on YouTube and Twitch. Turn on notifications for their official channels. They always show three text prompts on the screen during these streams.

Managing Your Stamina

Battery Charge is your stamina. You get one point every six minutes. You use this to farm level-up materials, Dennies, and disk drives.

Do not waste it. If you are struggling to survive, farm character XP and W-Engine XP. Levels give you guaranteed flat stats. Defense goes up, health goes up, attack goes up. It is the most reliable way to get stronger.

Farming disk drives should be the absolute last thing you do. It is pure RNG. You could spend a week of stamina and get nothing useful. Build your guaranteed stats first, then gamble on discs later.

FAQ

Are these text promos case sensitive?

Yes. You have to type them exactly as you see them. If the text has capital letters, make sure you use capital letters, or the system will reject it.

Can I use the same one twice?

No. Once your account claims a specific reward, the system flags it. You cannot spam the same text to get infinite currency.

Why does my game say invalid?

You either spelled it wrong, added an extra space at the end, or the developers have deactivated it. Check your spelling and try again.

Where do the developers post new ones?

They usually post them during the version update livestreams on YouTube and Twitch, or on their official social media pages for major milestones.

Do they work on PS5 and mobile?

Yes. As long as you are playing on the same account, the redemption menu works exactly the same across all platforms.

How often does the game update?

There is a major content update roughly every six weeks. This brings new characters, new story missions, and usually a fresh batch of promos.

What happens if I miss a livestream drop?

Nothing bad happens to your account, but you miss out on those 300 Polychromes forever. They do not bring old ones back, so you just have to catch the next stream.

Final Thoughts

Look, the gacha grind is always going to be there. That is just the nature of these games. You save up, you pull, you build characters, and then you do it all over again when the next cool agent drops. But staying on top of zenless zone zero codes makes that whole cycle a lot less stressful. It gives you that little extra cushion so you do not have to swipe your credit card every time you hit hard pity.

Claim your rewards, spend your battery charge wisely, and do not burn yourself out grinding disk drives. Build a solid team with good synergy, master your parries and chain attacks, and just enjoy the combat. Keep an eye on the official Discord, log into HoYoLAB for your daily check-in, and I might just see your clear times on the Shiyu Defense leaderboards.