Build a Dungeon Monster Tier List: Which Units Are Worth Keeping

Why No Official Build a Dungeon Monster Tier List Exists

The first thing to understand about a build a dungeon monster tier list for this Roblox title is that nobody has published an official one. The developer has not released a tier list and has not released a drop-rate table, so any ranking you read is community interpretation rather than confirmed data. What the game does give you is a hard structure to rank against: eight rarity steps and a fixed set of mutation multipliers, which you can compare directly before your own wave results decide the slot.

The Rarity Ladder and What It Actually Tells You

Every monster unit sits on one of eight rarity steps. The table below lists how many units are currently documented on each step, plus one example name, so you can see how thin the top of the ladder really is.

Higher rarity usually means a stronger baseline unit, but the table also shows how few units exist at the top. A Divine unit is one of only three documented names on that step, which is why players treat the ladder as a rough guide and not a finished ranking.

Legendary: The Realistic Target

Grave Warden, Ironhorn Minotaur and Storm Drake are the step most players can actually reach, so treat Legendary as your working core when you are pushing waves.

Mythic: The Step Above

Dread Knight, Frostwing Drake and Venom Hydra sit one step higher, and the documented roll milestone for Mythic is 160.

Secret and Divine: The Long Grind

Secret units such as Abyssal Dragon, Banshee Queen and Void Reaper sit behind a much longer roll commitment, while Divine units such as Seraph of Ruin and Eclipse Archon are the least documented step on the ladder.

Mutation Multipliers Decide Whether a Unit Is Worth Keeping

A duplicate unit is not automatically a bad pull, because a mutation can multiply its health and damage far beyond the base version. The table below collects every confirmed mutation value in one place.

Two details matter when you judge a unit with these numbers. Mutations do not change attack interval, range or skill percentages, so a mutated unit hits harder and survives longer but does not attack faster or reach further. The Dark Souls cost also climbs much faster than the multiplier, so a Cursed unit is 8x health and damage for 20x the Dark Souls, while a Golden unit is 2.4x for only 4x the cost.

1. Check the rarity step of the unit, since it sets the baseline you are comparing against.
2. Note whether the unit carries a mutation, then read its multiplier from the table above.
3. Compare that mutation's Dark Souls cost against its multiplier before committing currency.
4. Count the extra population it adds, because population decides how many units you can field.
5. Add the Boss Room 50% bonus if the unit is a Boss unit, then re-test it in your own waves.

The Boss Room Bonus and Roll Milestones

Boss units placed in a Boss Room receive 50% extra health and damage. That bonus is separate from mutations, so a Boss unit with a strong mutation stacks both effects on the same slot and can look far stronger than its rarity step suggests.

Roll milestones reported by the community give a rough sense of how much rolling sits behind each step: Legendary at 80 rolls, Mythic at 160, Secret at 300 and Divine at 2,000. These are community readings from live play, not official drop rates, so use them as a pacing reference rather than a promise about what your next roll will be.

Warning

The developer has not published the roll probabilities, so no player can state the exact chance of any rarity. If you need the real numbers, check the in-game interface.

• Confirm the rarity step before deciding to keep or release a unit.
• Read the mutation multiplier and its Dark Souls cost side by side.
• Check the extra population before you fill your remaining slots.
• Add the Boss Room 50% bonus when the unit is a Boss unit.
• Keep a record of your own wave results instead of trusting a copied list.

If you want to compare notes with other players, the official Discord and the Roblox game page are the two places the community shares run results.

Frequently Asked Questions

Is there an official build a dungeon monster tier list?

No. The developer has not published a tier list or a drop-rate table, so every ranking currently comes from player testing.

Are mutation units always worth keeping over higher rarity units?

Not automatically. Mutations multiply health and damage but also raise the Dark Souls cost, and they do not change attack interval, range or skill percentages, so compare the numbers before you decide.

What do the community roll milestones mean?

They report how many rolls other players had made when a step appeared, at 80 for Legendary, 160 for Mythic, 300 for Secret and 2,000 for Divine, and they are not confirmed probabilities.