Universal Tower Defense Z Tier List (Update 4.0)

We did not build this ranking from scratch. Nobody honest does, and we could not: we do not play this game. Ranking from first principles means running every unit through the same wave with the same team and the same upgrades, and at 115 units that is months of play. What we do instead is compile the published lists, name every one of them, cross-check them against each other, and then tell you exactly where they disagree and which way we called it.

The sources. The spine is the post-Update-4.0 Pro Game Guides ranking, cross-checked against Destructoid. The new-in-4.0 flag is anchored against Deltia's pre-4.0 baseline from May 2026, which is why units that look new sometimes read false: they existed before the patch and merely gained a new top-end evolution. You are entitled to know which sources we used, because if this page agrees with those pages, that agreement is not independent confirmation. It is one source wearing two hats.

What a cross-check actually is. When two independent guides put the same unit in the same band, that agreement is worth something. When they split, we say so on the unit's page instead of averaging them into a letter that neither source would sign. What none of it produces is a damage figure, and we do not pretend otherwise: this is a compilation of other people's judgement, not a measurement of the game.

How supports and farm units are judged. A support is ranked on what it adds to a fixed damage core, never on its own output, and a farm unit is ranked on the economy it generates. 22 of the units here are supports. On a straight damage-led reading they would all sit lower than they deserve, and this is the one place we deliberately depart from the source lists.

What we refuse to publish. A stat, a summon rate or an acquisition method appears on this site only when a source states it. Tier, element, role and the evolution label are all sourced and stated plainly. Synchro gets 7 pairings, each with the kind its source uses and the source named, because that is all anybody has published. Damage numbers appear nowhere, on any page, with one exception: the two Clashes whose multipliers and cooldowns Deltia's Gaming and Pro Game Guides published, and which we attribute to them on the spot.

This is the part of the game a tier list is structurally bad at. Six S+ units is not a team if four of them are Ground DPS and the map gives you two good ground tiles. The unit that saves that run is usually a Hybrid two bands lower, and no ranking that sorts by power alone will ever tell you so.

Filter the table above by role before you spend anything. If your box is stacked with Ground DPS, the highest-value pull available to you is a Hill or Hybrid unit you would otherwise have scrolled past.

Take Visionary (Unrivaled). Two things are going on in that name and most guides collapse them into one. Unrivaled is the evolution stage: which form of the unit you are looking at, reached by spending material. Rarity is a separate property, describing how hard the unit is to obtain rather than how far it has travelled up its own chain. It is published: Pro Game Guides' UTDX unlock and evolution table has a rarity column, and 6 values appear in it — Mythic, Legendary, Epic, Rare, Secret, Exclusive. Mythic dominates that column, Epic and Rare are the thinnest, and a handful of rows read "Rarity TBA".

These come apart constantly. A high-rarity unit can sit at its base form. A lower-rarity unit can be fully evolved. Those are not the same investment: one wanted luck, the other wanted grind, and if you read the bracket as a rarity band you will spend gems on summons when what you needed was evolution material for something already in your box.

We flag the evolution stage on every unit page. We do not show a per-unit rarity, for the reason below.

The lists we work from were made for different versions of the game. The pre-4.0 baseline predates the rename from Universal Tower Defense X to Z on 9 July 2026 and 44 of the units in the table above, so it cannot have an opinion about any of them. Synchro Clash is older than that — Deltia's Gaming dates it to Update 2.5, not to 4.0 — but it is still the mechanic most likely to make a unit-in-isolation ranking wrong, because a letter grade cannot express what a unit is worth alongside its partner.

Our rule where they conflict: the post-4.0 verdict wins, and the unit page says the placement was contested. That rule is not free. The older list had months of play behind it and the newer one had days. We chose recency over accumulated evidence because a renamed game with a reshuffled roster is, in the ways that matter to a tier list, a different game. You are entitled to disagree with that call, which is why we are telling you we made it.

Where they conflict most: the middle bands. A and B are where two reasonable people looking at the same unit reach different letters, and where the published lists are thinnest and least consistent with each other. The top and the bottom are stable. Treat A and B here as an opinion with a source, not a measurement, and check the element and role columns before you take the letter seriously.

For a single unit, the unit index carries the same caveats page by page, and each unit says in plain words which source put it where rather than hiding behind a badge. For the best fit in a specific slot, use the Best Units by Role picker.