Build a Dungeon Guide: Getting started
About
OverviewBuild a Dungeon is a Roblox game where you design a dungeon, fill it with monsters, and defend against endless waves of heroes trying to clear it. Your dungeon keeps fighting even when you are offline, earning you Coins while you are away. This guide covers everything you need to get started, build a stronger dungeon, run the Labyrinth, and get more out of guilds and weather events.
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Build a Dungeon
Getting started
Step
When you first load in, your priority is building a path for heroes and getting units down to fight them. Coins earned from defeated heroes let you roll for better units and buildings at the roll stand.
- Open the Build tab place floor tiles to create a path that heroes will walk through toward the staircase.
- Use the roll stand spend Coins to roll for units and buildings at random.
- Place units near the entrance position your first units close to where heroes enter so they begin dealing damage immediately.
- Press the Fight button start the wave and watch your units engage the heroes.
- Expand your dungeon if your grid is smaller than you need, open Build and select Expand to add more space as your Coin income grows.
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Choosing rooms for your units
TipsEach room type boosts units or traps of a specific kind. Mixing different room types under the same unit does not combine their bonuses, so choose one that fits. For large units with a 3×3 or 2×2 footprint, only one tile in the footprint needs to be the bonus room tile — the rest can be ordinary floor, which saves a lot of Coins.
- Physical units belong in an Armory, which adds 25% physical damage.
- Fire units and fire traps belong in a Lava Chamber, which adds 50% fire damage.
- Undead units belong in a Graveyard, which adds 35% damage.
- Boss-classified units placed in a Boss Room gain 50% more health and 50% more damage.
- Dragon Nest gives units 30% more health and fire attacks 25% more damage.
- A Treasure Room at the end of a dead end lures most heroes into the detour, and heroes killed there drop 50% more Coins.
Traps and how to combine them
TableAll damage values and cooldowns are before room bonuses. Directional traps — Arrow Trap, Ballista Tower, Frost Obelisk, and Flame Spire — fire in a straight line and cannot shoot through walls, so aim them along the enemy path.
| Trap | Rarity | Damage / Effect | Cooldown | Notable use |
|---|---|---|---|---|
| Spike Trap | Common | 18 per hit | 1.1 seconds | Hits every hero on the tile at once |
| Tar Pit | Common | Slows 50% | — | Slows heroes walking through the tar |
| Arrow Trap | Uncommon | 11 per hit | 0.8 seconds | 3-tile lane; rotate to aim |
| Bear Trap | Uncommon | 25 per hit; holds 2.5 seconds | 6 seconds | Locks one hero in place |
| Ballista Tower | Rare | 30 per hit | 1.4 seconds | 5-tile lane; rotate to aim |
| Fire Trap | Rare | 8 hit + 9/sec burn | 2.2 seconds | Pair with Oil Trap for more fire damage |
| Oil Trap | Rare | +75% fire damage taken | — | Use before Fire Traps or Flame Spires |
| Frost Obelisk | Epic | 20 per hit; freezes 0.65 seconds | 1.5 seconds | 4-tile lane; stops heroes cold |
| Falling Rocks | Legendary | 45 per hit | 6 seconds | Hits a 3×3 tile area |
| Flame Spire | Legendary | 42 hit + 8/sec burn | 2.2 seconds | 4-tile lane; use with Oil Trap |
Support units and buff placement
Tips
Support units buff attackers within a radius. Identical altars or shrines do not stack, so a second Dragon Altar touching the same unit as the first provides no extra benefit. Mutations raise a support unit's own health and damage, but only specific abilities grow stronger.
- Spirit Totem reaches 3 tiles and gives +30% damage, +25% health, and +25% trap damage to units in range — all three bonuses scale up with mutation.
- Banner Goblin reaches 2 tiles and gives +15% unit and trap damage, rising to +30% at Cursed mutation.
- Rune Sage reaches 2.5 tiles and gives +20% damage, +15% attack speed, and +15% trap recharge — the damage portion grows with mutation.
- Battle Bard reaches 2.5 tiles and gives +25% attack speed.
- Grove Healer reaches 3 tiles and heals nearby units for 12% of their maximum health every 3 seconds.
- Dragon Altars must touch the edge or corner of a unit's footprint to apply their bonus, and two identical altars touching the same unit do not both apply.
Running the Labyrinth
StepThe Labyrinth is a separate three-floor maze that generates a new layout every run. You can go in alone or with friends, and your dungeon keeps fighting while you are inside. When you finish or leave early, you can collect whatever your dungeon earned while you were away.
- Build your squad pick up to five units to bring in; area-of-effect units can hit multiple enemies inside the Labyrinth.
- Equip a weapon weapons bought at the Forge have two Labyrinth-only skills bound to Q and R, each with its own cooldown.
- Read the minimap it marks chest locations, locked fights, and boss rooms.
- Choose difficulty carefully Eclipse Archon only drops from boss chests on Nightmare or Abyssal difficulty.
- Use the Leave Early button if you need to stop mid-run, this exits cleanly without losing your roll stand progress.
- Collect your dungeon rewards after the run Coins and Dark Souls your dungeon earned while you were exploring are waiting when you return.
FINALLYUPDATED
GUILDS
2KCCU!
DRAGONALTAR
Weather events and when to act
CheckEvery server runs the same nine-event weather cycle in the same order. Each event lasts 45 minutes, the full cycle takes 6 hours and 45 minutes, and it repeats from the beginning after Hellfire Night. Bonuses only apply while the event is active.
- Golden Hour Coins are doubled for the duration.
- Lucky Rainbow roll luck is increased by 50%.
- Soul Eclipse Dark Souls earned are doubled.
- Frost Moon Frozen mutation chance is increased by 50%.
- Cursed Fog Cursed mutation chance is increased by 50%.
- Gilded Tide Golden mutation chance is increased by 50%.
- Thunderstorm damage is increased by 50%.
- Hellfire Night Infernal mutation chance is increased by 50%.
Guilds and their perks
SummaryGuilds cost 100,000 Coins to create and hold up to 50 members. The combined total of every member's highest cleared wave determines the guild's level and its position on the leaderboard. Levels 1 through 10 each unlock a perk that applies to all members.
- Level 2 +10% Coins
- Level 3 +10% Dark Souls
- Level 4 +10% Luck
- Level 5 +10% unit damage
- Level 6 +20% wave Coins
- Level 7 +10% unit health
- Level 8 +20% Coins and Dark Souls
- Level 9 +20% unit health and trap damage
- Level 10 +50% unit damage
Glossary
Glossary- Mutation
- A variant form of a unit — Golden, Frozen, Infernal, or Cursed — that multiplies the unit's health and damage by 2.4×, 3.8×, 5.6×, or 8× respectively and increases its population cost.
- Population
- The number of slots a unit uses.
- Roll stand
- The in-game station where you spend Coins to randomly receive units and buildings.
- Forge
- The shop where you buy weapons with Coins; each weapon comes with two skills that only work inside the Labyrinth.
- Dark Souls
- A secondary currency earned in the Labyrinth and elsewhere, used for mutation-related upgrades.
- Boss Room
- A Mythic-rarity room tile that gives Boss-classified units 50% more health and damage.
- Pity
- A system that increases your chances of rolling a rare result; the pity button shows your current pity values.
- Squad
- The group of up to five units you bring with you into the Labyrinth.
Common questions
FAQDoes my dungeon keep fighting while I am offline?
Yes, your dungeon battles heroes automatically even when you are not playing.
Do Labyrinth rewards get split between players?
No, every player in the run receives the full reward individually. However, the amount of Coins and Dark Souls each person earns is based on their own best cleared wave, so players at different progression levels will walk away with different totals.
How do I get the four Labyrinth-exclusive units?
Briar Wolf, Jade Basilisk, Cinder Colossus, and Eclipse Archon only drop from boss chests in the Labyrinth — you cannot roll them at the stand. Eclipse Archon specifically requires Nightmare or Abyssal difficulty to appear.
Do I need a full bonus room under a large unit to get the bonus?
No. For a 3×3 unit, one matching bonus room tile in the correct position of its footprint is enough, and the remaining eight tiles can be ordinary floor. The same applies to 2×2 units, where only one of the four tiles needs to be the bonus room.
What is needed to create a guild?
Creating a guild costs 100,000 Coins. You set a name of 3 to 20 letters, a tag of 2 to 4 letters, a short description, a minimum wave requirement for new members, and whether membership is open or invite-only.
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