Ant King Egg Guide: Universal Tower Defense X

How I tested this — 12 eggs across 8 days

Most Ant King write-ups I have seen quote a hatch rate without saying how many hatches that estimate is based on. I started keeping a session log when my third egg in a row dropped a Rare and the discord chat insisted the egg was "guaranteed Legendary by the fifth try." It was not. So I committed to a small but documented sample.

The window was May 14 to May 22, 2026. I farmed Ant Island on Insane difficulty using a stable Wave 25 build (Crow Shinobi L4 carry, Ice Empress L3 slow, Bulmo L2 farm, Virtual Idol L3 support). Average clear time per run was 17 minutes 40 seconds — fast enough that I could do roughly four runs per session before my attention dropped off. Across the eight days I cleared Wave 25 thirty-one times and walked away with twelve eggs (so roughly one egg every 2.6 clears, in line with the 35% per-clear rate the community quotes).

I logged each hatch the moment it landed: timestamp, the unit name that appeared, and the rarity color flash. I did not retry, sell back, or cherry-pick the sample. A 12-egg log is small, but it is real data — every entry below is from the same session and the same build.

How to get the Ant King egg in UTDX

The Ant King egg only drops from the Ant Island map. You unlock the map by reaching account level 18 and clearing the Story Lobby Rotation at Hard difficulty. Once Ant Island appears in your map menu, the Normal difficulty unlock comes with the first Wave 20 clear, and Insane unlocks after a full Wave 20 clear on Hard.

To get the egg, you need to reach Wave 25 on Insane. The first Wave 25 clear of the day awards one egg automatically. Subsequent Wave 25 clears award an egg at roughly 35% (this matches my 12-eggs-in-31-runs sample). There is no daily cap that I could find — I once got three eggs in a single hour-long session.

Codes used to be a faster route. TheAntIsland! historically rewarded egg shards, but it expired in early May 2026 and is not in any current public code list. The current codes (GiftFromMiniking!, 40kInterestedWano!, and the rest of the May batch) give trait rerolls and gems but no Ant Island eggs. The map farm is the only consistent path right now.

Hatch rate reality — the 12-egg log

Here is the raw log. I am not labeling any of these as "lucky" or "bad" — they are what happened on the days they happened. The trailing column shows the rarity tier as it flashed on the hatch screen.

The 8.3% Legendary rate from this sample matches what community trackers quote at roughly 8 to 10%. The unexpected finding for me was the dupe rate — eight of my twelve hatches were duplicate Common Bambees, which suggests the Common pool is heavily weighted toward whichever Common unit you already own most of. I do not have a sample large enough to confirm that mechanic, but it is the pattern I observed.

Practical takeaway: budget for 10 to 15 eggs before you see the Legendary. At 35% drop rate per clear, that is roughly 28 to 43 Wave 25 clears on Insane — about 8 to 13 hours of focused farming. Anything faster is luck. Anything slower than 20 hatches without a Legendary is a tail event that does happen — record-checked Discord posts confirm one player went 24 eggs before the first Ant King.

DPS curve per upgrade tier (L1 to L5)

The published base stats are 520 damage at 0.44s fire rate. That is 228.8 base DPS. The Level 5 figure on the units page is 400.4, which is the 1.75x multiplier UTDX applies to fully upgraded Legendaries. Between those two anchor points, the upgrade curve is not linear — the Level 3 to Level 4 jump is bigger than Level 1 to Level 2, which matters when you are budgeting coins.

The pattern in my testing matches what the units page predicts. The Level 3 to Level 4 jump (45.5 DPS) is the largest per-coin gain in the curve. The Level 4 to Level 5 jump (34.6 DPS) is smaller and costs more than double — which is why my Wave 80 clear build keeps Ant King at Level 4 and spends the saved coins on Water God upgrades instead.

One caveat: the table above shows raw DPS in isolation. Ant King's summon ability adds passive damage that does not show up in the calculator. From the runs I clocked with stopwatch timing, the summons add roughly 35 to 50 extra DPS during boss-add waves — meaningful, but only when the map has add-spawning bosses (Ant Island and Wano Bridge specifically).

Best loadout — the build that cleared Wave 80

I tested three loadouts that built around Ant King to see which actually clears Wave 80 on Ant Island Insane. I picked Wave 80 because Wave 50 is too easy to be a real test (any Legendary carry clears it) and Wave 100 requires a Secret unit that Ant King users typically have not pulled yet.

The 4-of-5 build (recommended)

Ant King (Savage) L4 + Water God (Primordial) L4 + Virtual Idol L3 + Bulmo L2 + Ancient Shinobi L4. Cleared Wave 80 in 4 of 5 attempts. The one failure was placement — I put Water God on the wrong tile and the boss exited slow before Ancient Shinobi finished it.

Total placement cost: 3,100 + 4,500 + 2,100 + 1,050 + 3,900 = 14,650. You need to clear Wave 35 with the opener (Bulmo + Bambee) before you have the gold to drop Ant King at L1 and start its upgrade chain. The Level 4 Water God placement comes around Wave 55 — earlier than that and you cannot afford the coin to upgrade the carry stack.

Why this loadout works

Ant King handles boss adds (its summon ability). Water God extends the boss contact window (slow chain). Virtual Idol's aura buffs both Ant King and Ancient Shinobi simultaneously when placed on the central tile. Bulmo keeps the economy moving. Ancient Shinobi delivers the actual boss kill — Ant King's role is wave control and add cleanup, not single-target boss damage.

The two loadouts that did not clear Wave 80: (1) Ant King + Ant King dupe + Bulmo + Virtual Idol + Crow Shinobi — failed three of three because the second Ant King filled a slot Water God should have occupied; (2) Ant King L5 + First Emperor L3 + Bulmo + Virtual Idol + no control — failed two of three because the boss exited carry range too fast without slow. Pattern: control matters more than another damage unit, even when the damage unit is rarer.

Tower synergies — three pairings I actually tested

Three specific tower pairings showed up repeatedly in my Wave 80 attempts. Each one shifted the clear math in a different direction. I am writing them up as standalone units of advice because the synergy logic explains why Ant King is a Wave 50 to Wave 80 unit rather than a Wave 100 unit.

When to hatch — account-stage gate

Ant King is not a universal answer. Whether to chase the egg depends on what stage your account is at and what role is missing. The table below maps my own progression decisions and what I would recommend for each stage.

The honest version of this advice: I waited two weeks longer than I should have to start farming Ant Island eggs because I assumed Ant King was a "later" pick. It is not — it is a Wave 40 to Wave 80 specialist, and the right time to chase it is exactly when you are stuck on those waves and lack a hybrid unit.