Building a free-to-play team in Universal Tower Defense Z

Paying in a game like this rarely unlocks a mechanic. It buys attempts, and attempts buy breadth. So the free player is not short of power, they are short of rerolls, and a plan that assumes you can keep summoning until the meta unit lands is a plan written by someone who could.

Which flips the strategy. The paying player can afford a wide, shallow roster because they will eventually pull the missing piece. You cannot, so your roster has to be narrow and finished. Six slots, and at least one of them fully invested rather than six at level one.

There are 19 units at S+ on our tier list, and Update 4.0 alone added twenty-four or more units to the game, which tells you how fast the top of this roster turns over. Publishing a locked six-unit list against a roster that moves that quickly would be a page we would have to quietly rewrite every patch, so here is the shape instead.

• One damage core. The best damage unit you own, levelled, and the first unit you spend shards on. Not the best unit on the tier list. The best one in your inventory.
• One support, if you have one. Support is scarce at the top of this roster, which raises the value of any support you already own.
• Four flexible. Fill these with whatever covers the stage in front of you. They change more often than the first two, and that is the point of them.

Synchro arrived in Update 4.0 and pairs two specific units. It comes in two kinds, and for a free roster the difference is the whole point:

• Fuse. The two units merge into a different unit. You get something stronger and you get a board slot back, but you no longer have the two originals on the field.
• Clash. Both units stay on the board and gain a combo attack between them. Two slots, two units, one extra effect.

For a six-slot team built on scarcity, that is a real decision rather than a strictly-better button. A Fuse frees a slot you can spend on coverage. A Clash keeps two bodies on the path, which matters more when your roster is thin and each unit is doing a job. The full pair list, and which kind each pair is, sits on the Synchro page rather than being copied out of date here.

Not verified yet. We have not measured what a Synchro pair grants numerically. We know the pairs exist, we know which kind each one is, and we know the game flags them. We are not going to attach a percentage to it that we cannot show you.

Of the 19 units at S+, our roster data tags 0 as support. Everything else at the top of the list is damage in one form or another. That ratio is the argument.

The mistake free players make is treating support as the thing you add once the damage is finished. In practice it is the thing that lets an underlevelled damage core survive long enough to matter, which is exactly the situation a free roster is always in.

Not verified yet. We have not measured the actual output of any support unit, so treat the role tags as a map of what a unit is for, not as a ranking of how well it does it.

A free-to-play guide is only as good as its acquisition routes, and ours are incomplete. We can source tiers, roles where they are stated, and the two Synchro pairs. We cannot currently source, for every unit, whether it comes from a standard summon, an event extraction, a mode gate or an evolution chain.

That is a real limitation and it changes what you should do with this page. Use it for the shape of a team and for the pairs. Do not use it as a shopping list, because a shopping list where half the prices are missing is worse than no list at all. Unit pages get a full acquisition section as we confirm each one, and until then they say so.