All Star Tower Defense Free Robux Guide (2026) — Best Units, Active Codes & Tips

All Star Tower Defense is one of the longest-running and most-played anime tower defense games on Roblox, sitting at over 7.6 billion visits with roughly 28,000 concurrent players at any given time. Developed by Top Down Games (the team behind FruitySama and Benoxa, now under the Gamefam umbrella), ASTD launched on May 7, 2020 and has been pumping out updates ever since. Whether you're trying to evolve Frieren to 6-star, grinding Infinite Mode for Stardust, or just looking for working codes, this guide breaks down everything you need to dominate the game and stretch your Robux as far as possible.

What Is All Star Tower Defense?

If you've spent any time in the Roblox tower defense space, you've almost certainly run into All Star Tower Defense. The concept is straightforward: you assemble a team of 6 units inspired by anime characters, place them on a map, and defend against waves of enemies. What makes ASTD stand out from the pack is the depth of its unit collection, the 6-star evolution system, and the sheer volume of content that's been built up over nearly six years of development.

The game drops you into a lobby where you select your team composition before queuing into Story Mode stages or Infinite Mode runs. Each unit occupies one of six team slots, and the unit in Slot 1 acts as your leader — it deploys first and often carries a passive leader bonus that affects your whole squad. This slot system adds a layer of strategy that most tower defense games skip entirely. You're not just picking strong units; you're deciding who leads the charge.

What keeps players coming back is the evolution pipeline. Units start at lower star ratings and can be evolved up through 5-star and eventually to 6-star, which is where the real power lives. A base unit and its 6-star form are barely the same character. The stat jumps are massive, new abilities unlock, and suddenly a unit that was mid-tier becomes a map-clearing monster. This progression loop is addictive in the best way — there's always another evolution to chase.

With 7.6 billion total visits, ASTD sits comfortably among the most visited games on the entire Roblox platform. It competes directly with games like Anime Defenders and Toilet Tower Defense in the tower defense category, but its longevity and roster depth give it an edge that newer titles haven't matched yet.

S-tier 6-star units like Frieren and Michishibo form the backbone of every competitive ASTD team

All Active ASTD Codes (March 2026)

Free Gems and Stardust are waiting for you — just copy these codes and redeem them in-game. We've verified all of these as of March 2026, but ASTD codes can expire without any heads-up from the developers, so grab them now.

That's five active codes right there, each handing out Gems and Stardust — the two most important currencies in the game. Gems fuel your summons for new units, and Stardust powers up the units you already own. Between these codes and the Social Rewards system (which gives you bonuses for subscribing to the dev channels), you can stockpile a solid resource base without spending a single Robux.

How to Redeem Codes in All Star Tower Defense

The code redemption process in ASTD is simple, but you need to know where to look. Unlike some games that hide their code input behind obscure menus, ASTD puts it right in the Settings panel.

1. Launch All Star Tower Defense on Roblox and load into the lobby.
2. Click the Gear icon in the bottom-right corner to open Settings.
3. Look for the code input text field inside the Settings menu.
4. Type or paste your code exactly as shown — codes are case-sensitive.
5. Click Confirm to submit the code.
6. Check your Gems and Stardust balance to verify the rewards landed.

If a code fails, double-check the exact spelling and capitalization. The code superluffysubcount is all lowercase with no spaces, for example. If it's typed correctly and still doesn't work, the code has expired. The developers don't always announce when codes are being retired, so speed matters.

Best Units Tier List — S-Tier Breakdown

All Star Tower Defense has hundreds of units across multiple star ratings, but only a handful sit at the very top of the meta. These S-tier units are the ones you want to evolve to 6-star first and invest your Stardust into. They define team compositions and carry you through the hardest content in the game.

S-Tier (Best in Game)

Frieren — The queen of ASTD right now. Frieren's 6-star form deals devastating AoE magic damage with a passive that increases damage against enemies that have been on the map longer. She gets stronger as waves progress, which makes her absurdly good in Infinite Mode where late waves are the real challenge. If you pull Frieren, she goes straight into Slot 1.

Michishibo — A powerhouse single-target DPS unit that melts boss HP bars like nothing else in the game. Michishibo's evolved form gains an attack that ignores enemy defense buffs, making him the go-to pick for stages where bosses are the main threat. Pair him with Frieren for a DPS core that handles both AoE and single-target situations.

Xero — Ice-based crowd control with some of the best utility in the roster. Xero's freezing attacks slow enemy movement and attack speed, giving your entire team more time to deal damage. The 6-star evolution adds an AoE freeze burst that can lock down an entire wave for several seconds during clutch moments.

The Strongest One — Raw brute-force damage in a single unit. The Strongest One has the highest base attack stat in the game at 6-star, and his abilities scale with enemy HP, meaning he hits harder against tougher enemies. He's the unit you drop when you need something dead immediately.

Dark Wing — A flying DPS unit with unique map coverage. Dark Wing can hit enemies across lanes that ground units can't reach, making him essential on maps with branching or elevated paths. His 6-star form gains a shadow dash ability that lets him reposition mid-wave.

Zaruto (Beast Cloak) — The Beast Cloak version of Zaruto is leagues ahead of the base form. This transformation grants massively boosted attack speed and a chain attack that bounces between multiple enemies. Zaruto shines in situations where waves come fast and you need constant damage output rather than burst.

The current ASTD meta revolves around 6-star evolved S-tier units with Stardust upgrades

Supreme Leader — The best support unit in ASTD. Supreme Leader buffs the damage and attack speed of all nearby allies, effectively acting as a force multiplier for your entire team. One well-placed Supreme Leader can increase your total team DPS by 30-40%, making it arguably the most impactful single unit you can place on the field.

Sky God — Aerial AoE that rains down attacks from above with massive range. Sky God covers more of the map than almost any other unit, and his 6-star form gains a divine storm ability that deals percentage-based damage to all enemies on screen. He's the safety net that catches any enemies your focused DPS units miss.

How to Build the Perfect 6-Unit Team

ASTD limits you to 6 units per match, so every slot counts. Building a strong team isn't just about cramming in six S-tier characters — it's about creating a composition where each unit covers a different role and the whole squad works together.

The Core Team Formula

The most consistent team structure follows this pattern: 1 leader DPS (Slot 1), 2 secondary DPS (mixed AoE and single-target), 1 support/buffer, 1 crowd control, and 1 flex pick. This gives you coverage against every type of wave the game throws at you.

For example, a top-tier team might look like: Frieren (Slot 1 leader, AoE DPS), Michishibo (single-target DPS), The Strongest One (burst DPS), Supreme Leader (support buffer), Xero (crowd control), and Sky God (flex/AoE coverage). This setup handles early waves, late waves, bosses, and everything in between.

Slot 1 Leader Selection

Your Slot 1 leader deploys first, so it needs to be a unit that can hold the line solo during the opening waves while you accumulate in-game currency. Frieren is the top pick for this slot because she starts strong and scales even harder as the match progresses. The Strongest One is another solid choice if you don't have Frieren, since his raw stats let him bulldoze early waves without support.

Avoid putting support units in Slot 1. Supreme Leader is incredible, but deploying a buffer first when there's nothing to buff is a waste of your opening tempo. Support units belong in slots 3-5, deployed after your damage core is already on the field.

Adjusting for Different Modes

Story Mode stages often have specific enemy types or gimmicks that reward certain unit picks over others. Some stages heavily feature flying enemies (where Dark Wing and Sky God become mandatory), while others throw boss-heavy waves at you (where Michishibo outperforms everyone). Don't be afraid to swap units between modes. A team that dominates Infinite Mode might struggle on a Story Mode stage that counters its composition.

Smart team composition matters more than raw unit rarity — balance your 6 slots across DPS, support, and crowd control

5-Star to 6-Star Evolution & Stardust Guide

The evolution system is where ASTD's depth really shows. Getting a good unit is just the beginning — evolving it to 6-star and pumping Stardust into it is what turns a solid pull into a game-changing powerhouse.

How 6-Star Evolution Works

To evolve a unit from 5-star to 6-star, you need the base unit at max level plus specific evolution materials. These materials come from Story Mode clears, Infinite Mode rewards, and Time Chamber farming. Each unit has a unique evolution recipe, so check the wiki or in-game evolution menu to see exactly what you need for the unit you're targeting.

The stat jump from 5-star to 6-star is the biggest power spike in the game. We're talking 2-3x increases in attack power, new abilities that fundamentally change how the unit plays, and passive effects that can influence your entire team. A 6-star Frieren doesn't just hit harder than a 5-star Frieren — she plays like a completely different unit.

Stardust Upgrades

Once your unit is at 6-star, Stardust becomes the next progression path. Stardust upgrades provide flat stat increases to attack power, range, and attack speed. These upgrades stack and persist permanently, so every bit of Stardust you invest compounds over time.

Prioritize Stardust spending on your Slot 1 leader and primary DPS units. A fully Stardust-upgraded Frieren or Michishibo can solo content that would require an entire team of un-upgraded 6-stars. The difference is that dramatic.

Trait Rerolling

Each unit comes with randomized traits that provide bonus stats. The trait rerolling system lets you reroll these bonuses until you get the combination you want. For DPS units, chase damage and attack speed traits. For support units like Supreme Leader, look for range and buff-effectiveness traits. Good traits on an S-tier 6-star unit with Stardust upgrades is the absolute peak of ASTD power.

Story Mode, Infinite Mode & Time Chamber

ASTD offers three main game modes, and each one serves a different purpose in your progression. Understanding when to play each mode saves you time and gets you to endgame faster.

Story Mode

Story Mode is your primary progression path. You'll work through increasingly difficult stages that test your team composition and placement skills. Each stage rewards Gems, experience, and sometimes evolution materials on first clear. Story Mode is where you unlock new features, access higher-difficulty content, and earn the bulk of your early-game resources.

Don't rush through Story Mode with a carried team. The stages teach you mechanics and enemy patterns that become critical knowledge in Infinite Mode. A player who brute-forced Story Mode with borrowed units will hit a wall in endgame content that a player who learned the mechanics naturally won't.

Infinite Mode

This is where the real farming happens. Infinite Mode throws endless waves at you, and your rewards scale with how deep you push. The longer your team survives, the more Gems and Stardust you earn per run. This is the primary way experienced players accumulate resources for evolution and upgrades.

Your Infinite Mode depth is directly tied to your team's power level. A squad of fully evolved 6-star S-tier units with Stardust upgrades can push deep into triple-digit waves, where the per-wave rewards are enormous. Early on, even reaching wave 30-40 in Infinite Mode is a solid farming session.

Time Chamber

Time Chamber is the targeted farming mode. Instead of general rewards, Time Chamber stages drop specific evolution materials that you need for particular unit upgrades. If you're trying to evolve Frieren to 6-star and you need a specific material, Time Chamber is where you go to get it. Plan your Time Chamber runs around your current evolution goals so every run directly contributes to your next power spike.

Game Passes — Which Ones Are Worth It?

All Star Tower Defense offers several Game Passes at different price points. Here's an honest look at each one, so you know where your Robux delivers the most value. If you need Robux without spending real money, check out Earnaldo's earning page for legitimate options.

VIP (300 Robux) — The single best Game Pass in ASTD. VIP provides significant bonuses to your Gem income and unlocks exclusive perks that accelerate every aspect of progression. The compounding effect of extra Gems per play session adds up fast. If you're buying one Game Pass and only one, make it VIP.

3x Speed (799 Robux) — Speeds up gameplay by 3x, which cuts farming run times by roughly two-thirds. If you're running Infinite Mode multiple times per session, this pass saves you hours per week. It doesn't make your units stronger, but it lets you accomplish three sessions' worth of farming in the time it normally takes for one.

Cloud Unit Display (175 Robux) — A cosmetic pass that changes how your units are displayed with a cloud-themed visual effect. This is a flex purchase for players who want their units to look unique. No gameplay impact.

Pod Unit Display (180 Robux) — Similar to Cloud Display but with a pod theme. Another cosmetic option. Pick whichever visual style you prefer, or skip both if you're strictly focused on gameplay value.

Car Unit Display (200 Robux) — The third display variant. Cars are cool, but this is still purely cosmetic. Only worth it if you're collecting display styles.

Star Pass Ultra (799 Robux) — A seasonal battle pass that unlocks premium reward tiers. The value depends on how consistently you play during the season. If you log in daily and complete the pass, the rewards outweigh the cost. If you play sporadically, you might not finish enough tiers to justify the Robux.

Infinite Mode deep runs are the best way to farm Gems and Stardust for powering up your roster

How to Earn Free Robux for ASTD

Game Passes like VIP and 3x Speed cost Robux, and not everyone wants to buy them with real money. The good news is there are legitimate ways to earn Robux for free that don't involve any generators, scams, or sketchy downloads.

Platforms like Earnaldo let you complete simple tasks — watching videos, taking surveys, testing apps — and convert the rewards into Robux. It's not going to make you rich overnight, but a few focused sessions can easily earn enough for the VIP pass. And since VIP is a permanent purchase that keeps paying dividends every time you play ASTD, that's one of the highest-value ways to spend earned Robux.

The math works out well when you compare it to alternatives. Spending 300 earned Robux on VIP gives you a permanent bonus that affects every future play session. Spending the same Robux on a one-time Gem pack gives you resources that are gone after one or two summon sessions. The permanent passes are always the smarter investment.

If you're into other anime-style Roblox games alongside ASTD, our guides for Anime Vanguards, Anime Last Stand, and Sailor Piece cover similar strategies for maximizing your Robux value in those games too.

Best ASTD Content Creators

Staying on top of the ASTD meta means watching the people who break down every update, test every unit, and optimize every strategy. These creators consistently deliver the best All Star Tower Defense content:

FruitySama — One of the actual developers behind ASTD, FruitySama's channel is the closest thing to an official news source. Update previews, code announcements, and behind-the-scenes development insights all drop here first. If you subscribe to one ASTD channel, make it this one — plus, the Social Rewards system gives you in-game bonuses for following the dev channels.

NavyXFlame — Focused on tier lists, unit showcases, and detailed gameplay guides. NavyXFlame's breakdowns of new units are some of the most thorough in the community, covering everything from raw stats to optimal placement strategies. His Infinite Mode push videos show exactly how deep each team composition can go.

Xeem — Covers the strategic and optimization side of ASTD. Xeem's content is perfect for players who want to squeeze maximum efficiency out of every farming session. His Stardust investment guides and trait rerolling tutorials have saved the community countless wasted resources.

All three creators are active on YouTube and frequently share exclusive codes and early update information with their audiences.

Frequently Asked Questions

Final Thoughts

All Star Tower Defense has been going strong for nearly six years, and with 7.6 billion visits under its belt, it's clear that Top Down Games built something with staying power. The combination of a massive unit roster, the satisfying 5-star to 6-star evolution grind, Stardust upgrades, trait rerolling, and multiple endgame modes gives players a progression loop that stays engaging long after most games would have gone stale. Whether you're pushing deep into Infinite Mode or carefully planning your next 6-star evolution, ASTD rewards strategic thinking and consistent play.

If you're also exploring other anime tower defense games on Roblox, our Anime Defenders guide and Anime Vanguards guide cover two more top-tier options in the genre. And for something outside the tower defense space, Blox Fruits and King Legacy bring the anime action-RPG vibe to Roblox.

Good luck out there, and may your next summon be a 6-star Frieren.