8 Bit Tower Defense Best Team: How to Build a Squad That Works Together

Picking the best team in 8 Bit Tower Defense is a per-match decision, not a one-time setup: your squad is the lineup carried into each battle, and you can rebuild it from the Units screen any time before a match starts. There is no fixed lineup every player should copy — collections differ from player to player, and in-match placement limits push you toward a mix of complementary units rather than a pile of copies of one favorite. What makes units work together is readable straight off their cards: area damage, single-target damage, flying coverage, long-range reach and support effects each cover a different job.

Quick answer

Set up your team from the Units screen before a match: open Units, swap a squad member for another unit you own, and start the battle with the edited lineup. Build the squad around complementary card roles — area damage, single-target damage, flying coverage and long range — because matches cap how many copies of one unit you can place.

• Squad edits happen before a match, and the edited lineup is what fights.
• Each unit's card carries a short trait description of what it does — and some cards explicitly say the unit hits flying enemies.
• There is a per-unit placement cap in matches — one player maxed out at four copies.
• Squad units gain XP from every match; battle gold goes to the level tab, trade rewards to the trades tab.

How to set up your squad before a match

Open Units and every unit you have collected is there, sorted with rarity filter tabs: ALL, RARE, EPIC, LEGENDARY, MYTHIC and SECRET. Squad membership is edited on this screen before you start a battle. For example, a player removed a unit from their lineup, put a Spine Hedgehog into the empty spot, and started the match with the edited squad — the lineup on screen is what the next fight uses, so one swap is all it takes to retune your team for a harder world or a different mode.

Which units you have to work with depends on your own collection; inventories vary between players. If your squad feels thin, the fix happens outside this screen — see how to get units — and then you come back here to re-edit. The units list, unit rarities and tier list map out what exists and how the tiers line up. Brand new to the game? The how to play guide covers match basics first.

Read the cards: the roles that make units work together

Every unit card carries a short trait description of what that unit does, and the differences are real gameplay, not flavor text. The three starter picks show the spread (the traits guide goes deeper on trait rolls):

Pebble Frog picks off one enemy at a time from long range and reaches flying enemies; Honey Bee tears through groups with fast stings and a swarm bonus; Dart Dragonfly throws dart volleys that also hit flying. Two of the three starters handle flying — and that matters, because not every unit does.

Units genuinely differ in what they can hit. Some attackers cover an area around them while others strike a single target — one player mid-match was pleased to discover their frog was hitting the whole area. Flying is the sharpest divide: some cards explicitly say a unit hits flying enemies, while other units were seen attacking only ground targets. The natural reading from that match was that ground-only units cannot touch flying enemies at all — the player themselves treated it as a guess rather than a confirmed rule — but until a ground-only unit proves otherwise, a card-confirmed flying hitter is worth a squad slot every time.

Coverage also shapes placement. A long-range unit was deliberately placed at the back of the map, where its reach covers a wide slice of the path, while low-range units were tucked directly beside the path where their short reach still connects. If your squad includes a long-range unit, the back line is its natural home; front spots beside the path belong to the tiny-range units. The how to place units and unit range guides go deeper.

Abilities add a third layer on top of raw damage. Effects seen in matches include a unit applying poison, a unit applying a slow, and defensive text on a Hedgehog-type unit saying it shields and soaks damage first. Placed units can also be upgraded mid-match for cash, with the upgrade cost and the damage/range gain shown on screen — see unit upgrades and unit abilities. Exact numbers and scaling were not established, but the roles are visible in play: poison, a slow, and a shield that takes hits before the rest.

Checklist

• Flying coveragehigh

  Bring at least one unit whose card says it hits flying enemies — Pebble Frog and Dart Dragonfly both qualify among the starters.

• Area damagehigh

  An attacker that covers an area handles groups, while single-target units take one enemy at a time.

• Long-range reachmedium

  A long-range unit at the back covers a wide slice of the path; low-range units belong beside it.

• Support effectsmedium

  Poison, a slow and a shield that soaks damage first were all seen on placed units — use one if your collection has it.

• Copies of one unithigh

  Expect a placement cap per unit in the match; four copies maxed out one player's placement.

• Leveled lineuplow

  Units that play in your matches earn XP — keep the squad you actually reuse leveled between sessions.

Why you can't just stack your best unit

During a match there is a maximum amount of a single unit you can place. One player ran into it during a story-match boss wave: they hit the cap at four copies of their unit and could place no more of it — "that's why we still need the others," as they put it, before filling the map out with different units. The exact cap was not established and may differ per unit or mode, but the direction is clear: squad diversity is not a stylistic choice, it is enforced by placement limits.

Total placement slots are limited too. You can run out of spots during a match, and extra slots can be obtained as you progress — one player picked up an additional slot and immediately wanted more room "so we can put some aura guys." They read the new slot as unlocking at level 15; that number is the player's own reading of the UI rather than a confirmed rule, but the extra slots themselves are real and worth watching for as you level.

Level and trade the squad you actually use

Squad building continues between matches. Each level adds damage to a unit, and squad units gain XP from every match they play. Gold earned in battles is spent in the level tab, while trade rewards from match completion go to the trades tab — see how to level up and the progression guide for the wider loop.

Trades are per-unit modifiers: they add damage, range, cash and more to a specific unit. Not happy with the roll? Re-roll it with a dice — the new trade replaces the current one. One observed re-roll produced Vigor, +5% damage. A single trade is a small bonus, but it is attached to a unit you place every match, so the squad you reuse session after session is the one worth leveling and re-rolling first.

Where the same squad has to perform

One squad serves a lot of content. The game offers six story worlds on Normal, Nightmare and Legend difficulties, co-op raids for up to four players (Rift Gate, Coral Cove and Eclipse Spire), Expedition — "one squad, three worlds, pick a Relic after every win" — plus Infinite mode and rotating challenges. Start with the game modes overview, then the story mode guide, raids guide, Expedition guide and difficulty levels for each mode's specifics.

Expedition is the clearest argument for a flexible mix: one lineup has to survive three different worlds, not just the one you tuned it for. Swapping members per match from the Units screen is how the same collection adapts to all of these modes. That is the practical loop: read your cards, cover what the squad is missing, respect the placement caps, and keep the lineup you actually fight with leveled and traded.