Updated: March 29, 2026

All Star Tower Defense Update March 2026 — Update 6: Star Pass and Portals

By Earnaldo Team • March 29, 2026 • 10 min read

Update 6 for All Star Tower Defense arrived on March 21, 2026, and it's the biggest structural change the game has seen in a while. The Star Pass introduces a battle pass system with exclusive time-limited units, Portals add a new strategic layer with tiered difficulty and unique modifiers, 13 new units drop including the first Primal rarity unit, and the BloodLust and Fear status effects create new combat dynamics. Here's everything you need to know.

What's New in Update 6

Update 6 touches three major systems: a new progression track (Star Pass), a new endgame challenge mode (Portals), and a massive roster expansion (13 units). Each system feeds into the others, creating more reasons to play daily and more ways to strengthen your lineup.

Star Pass

The Star Pass is ASTD's take on a battle pass system. It operates on a tier-based progression model where you earn XP by completing missions and unlock rewards as you level up. There are two tracks: a free track available to everyone and a premium track that costs 400 Robux (roughly $5 USD).

Missions come in three categories, each offering different XP amounts and time commitments.

The critical detail about the Star Pass is that exclusive units on the premium track will never return once the pass expires. This is different from limited banners or event shops where units might rotate back eventually. Star Pass exclusives are permanently gone after the season ends. If you care about collection completeness or competitive viability, the 400 Robux investment is worth serious consideration.

The free track still offers useful rewards including gems, stardust, and non-exclusive units. You don't need to spend Robux to benefit from the Star Pass system, but the premium-exclusive units are designed to be among the strongest available.

The Star Pass introduces daily, weekly, and monthly missions with exclusive unit rewards

Portal System

Portals are the standout strategic addition in Update 6. They function as a new challenge mode with tiered difficulty, unique modifiers, and exclusive rewards that you can't get anywhere else.

How Portals Work

You buy a portal from the Portal Shop. Each portal comes with a tier rating from T1 (easiest) through Unbound (hardest) and a set of unique modifiers that change the rules of engagement. You can only have one active portal at a time, so choosing which portal to run matters.

Portals support up to 6 players in co-op and feature 4 tiers of difficulty. Higher tiers drop better Evo Materials and have an increased chance of dropping units. Each portal randomly selects enchantments and categories that receive bonuses, meaning certain unit types will perform better depending on the portal's active modifiers.

Portal Modifiers

Modifiers are what make portals unpredictable and strategically interesting. Here are some of the modifiers currently in rotation.

The modifier system forces you to build different team compositions for different portal runs. You can't bring the same cookie-cutter lineup to every portal and expect it to work. An "Air Only" portal demands anti-air specialists, while "High Cost" rewards players with strong early-game units that can hold lanes while your economy catches up.

Current Portals

Two portals launched with Update 6, each with distinct strengths and their own dedicated shops.

Patternine Portal enhances multi-hit units, proc-based abilities, and AOE-focused team compositions. If your roster leans toward units that deal damage through rapid hits or area effects, this is the portal where they'll shine. The Patternine shop offers exclusive skins and limited-time units tied to this portal's theme.

Frost Moon Portal specializes in crowd control and defensive buffs. It's particularly useful for slowing enemy waves, which synergizes with units that need enemies to stay in range longer to maximize DPS. The Frost Moon shop has its own set of exclusive offerings.

Portals add tiered challenge content with unique modifiers like Air Only and Blitz

New Units

Update 6 introduces 13 new units, headlined by the first-ever Primal rarity unit. The new roster spans multiple roles and fills gaps in team composition that previously required workarounds.

Primal Rarity: Flaming Tiger

Flaming Tiger is the first unit with the new Primal rarity tier, which sits above all existing rarity levels. As you'd expect from a unit designed to sit at the top of the power curve, Flaming Tiger is a fire and AOE specialist built for multi-wave clearing. The unit excels at dealing sustained damage to groups of enemies, making it particularly strong on maps with clustered wave paths.

Primal units are meant to be aspirational targets. They're not easy to obtain, and their power level reflects that. Expect Flaming Tiger to be a centerpiece of endgame team compositions for the foreseeable future.

New 5-Star and 6-Star Units

The remaining 12 units span the 5-Star and 6-Star rarity tiers. Here's the full roster addition.

Several of these units are designed to synergize with the new status effects and portal modifiers. Blood Queen works with the BloodLust mechanic, Frost Moon pairs naturally with the Frost Moon Portal, and Patternine is built to perform best inside its namesake portal.

BloodLust and Fear Status Effects

Update 6 introduces two new status effects that add layers of strategy to combat encounters.

Fear

Fear is a debuff applied to enemies that causes them to take 10% more damage from all sources. That's a flat damage amplification that stacks multiplicatively with other buffs, making it extremely valuable in high-DPS compositions. There's a catch: if a feared enemy is rewound (pushed backward on the path), it walks faster in reverse and the Fear effect must be reapplied. This creates an interesting tension between using rewind mechanics and maintaining the damage amplification.

BloodLust

BloodLust is a passive system rather than a directly applied debuff. Certain units, like Blood Queen, gain increased DPS based on specific conditions such as base HP thresholds. The mechanic rewards strategic placement and team composition because you need to meet the BloodLust trigger conditions to unlock the unit's full damage potential. It's not a fire-and-forget buff. You have to build around it.

Together, Fear and BloodLust create a new meta layer where team composition matters more than raw stat numbers. A well-built team that leverages both effects will outperform a team with individually stronger units that don't synergize.

Trait Pity System

Alongside the new units, Update 6 also introduced a Trait Pity System. This ensures that you'll eventually acquire desired traits after a certain number of attempts, removing the worst-case RNG scenarios that previously frustrated players. If you've been unlucky with trait rolls in the past, the pity system guarantees eventual success.

Flaming Tiger debuts as the first Primal rarity unit in All Star Tower Defense

New Codes

Four codes dropped with Update 6. Redeem them as soon as possible since ASTD codes tend to expire without much warning.

For a complete and regularly updated list, check the ASTD codes page.

Updated Tips and Strategies

Star Pass Optimization

The most efficient way to progress through the Star Pass is to clear all three Daily Missions every day. Daily missions take 10 to 15 minutes and offer the best XP-per-time ratio. Weekly missions give more XP per mission but require more commitment per session. Monthly missions are the long-game grind and should be treated as passive goals you work toward naturally rather than something you force.

If you're on the premium track, check which exclusive units are on which tiers and calculate how much XP you need to reach them. Focus your efforts on the tiers that contain the units you want most. Some players will hit the final tier naturally through daily play. Others may need to be more strategic about stacking mission completions.

Portal Team Building

Before entering a portal, check its active modifiers and boosted categories. If a portal is boosting AOE units and running the Blitz modifier, you want fast-firing AOE specialists who can clear waves before they reach your base. If it's an Air Only portal, leave your ground-only units on the bench entirely.

The Patternine Portal rewards multi-hit and proc-based units. Stack units that hit rapidly and trigger on-hit effects. Renitsu and Patternine are natural fits here. The Frost Moon Portal rewards slow and crowd-control compositions. Frost Moon the unit is the obvious pick, paired with other units that benefit from enemies staying in range longer.

Fear and BloodLust Team Compositions

To maximize Fear's 10% damage amplification, apply it early in the wave and avoid rewinding feared enemies if possible. Position your Fear-applying units (like Meduka) at the front of the path so enemies get debuffed before reaching your main DPS cluster. This ensures your heaviest hitters benefit from the full 10% bonus throughout the enemy's journey.

For BloodLust, Blood Queen needs her HP conditions met to unlock maximum DPS. Don't place her in positions where she'll take unnecessary damage that drops her below the threshold. Pair her with Miracle Maker for healing support to keep her HP stable and her BloodLust passive active.

Community Reaction

The community has responded to Update 6 with more enthusiasm than any ASTD update in recent memory. The Star Pass system was initially met with skepticism from players worried about pay-to-win dynamics, but the inclusion of a free track with meaningful rewards has softened that concern. The 400 Robux price point is seen as reasonable for the exclusive units offered.

Portals are the most universally praised addition. The modifier system creates genuine variety in how you approach each run, and the co-op support (up to 6 players) encourages teamwork and communication. Players who were running the same maps with the same lineup for months finally have a reason to experiment and adapt.

The Primal rarity tier has sparked discussion about power creep. Flaming Tiger is undeniably strong, and some players worry that future Primal units will make existing top-tier units obsolete. Others argue that the game needed a new aspirational target and that Primal units give endgame players something to chase.

The Trait Pity System is unanimously well-received. RNG-based progression without any safety net was one of the most common complaints about ASTD, and the pity system directly addresses it. Players who spent hundreds of rolls without getting a desired trait now have a guaranteed path to success.

For more guides and tier lists, visit our ASTD hub. If you want Robux for the premium Star Pass, check the free Robux guide for ASTD.

BloodLust and Fear status effects add new strategic depth to team building

Frequently Asked Questions