Learn how to build a dungeon how to farm coins in Roblox [GUILDS] Build a Dungeon: potion shop income, longer hero routes, the escape menu hourly rate, and working code rewards.
Published: Build a Dungeon Wiki Editorial Team
Table of Contents
Where Coins Come From in Build a Dungeon
Build a Dungeon is a Roblox simulation and tycoon game from Exploration Guild, currently in beta as [GUILDS] Build a Dungeon. Heroes spawn at a single one-way entrance and follow the corridors you lay until they reach your dungeon crystal, and Coins are what you earn for stopping them along the way.
Resource
Where It Comes From
What It Buys
Coins
Defeated hero waves, potion shops on the route, the escape menu hourly rate, and redemption codes
Buildings, traps and parts
Dark Souls
Defeated hero waves, offline income, and redemption codes
Monster units
Coin and Soul Booster Potions
Redemption codes and in-game rewards
A temporary increase to what you earn
Recorded gameplay shows the escape menu reporting an hourly Coin and Dark Souls rate that is calculated from your highest wave, and the official game description confirms that monsters keep catching heroes while you are offline.
Redeeming Codes for Coins and Booster Potions
Promotional codes hand out Coins, Dark Souls and booster potions before you clear a single wave, and every code is redeemed from the Settings menu in the top-left corner of the screen.
Type or paste a code into the text box at the top of the window.
Press Redeem and confirm that the Coins, Dark Souls or potions appear.
Code
Rewards Included
Best Used For
2KCCU!
5k Coins and 3k Dark Souls
Early building pieces and unit rolls
DRAGONALTAR
3 Coin Booster Potions, 1k Coins and 3k Dark Souls
A long Coin farming session
LABYRINTH
3 Soul Booster Potions, 10,000 Coins and 1,000 Dark Souls
Funding rolls without grinding waves
100KVISITS!
Soul Booster Potion, Coins and Dark Souls
Topping up both currencies
DIVINE
Coin Booster Potion, Coins and Dark Souls
Extra Coin income while you build
Code lists change with every update, so treat the in-game Redeem window as the final check on what a code still pays. New codes are announced on the official Discord server and the Exploration Guild community page.
Turning Hero Traffic into Coin Income
Coins are paid by the waves your defenses defeat and by every hero who stops at a potion shop on the way in. A route that loops, dead-ends and makes heroes shop keeps them inside the dungeon longer and walks them past more of your income tiles.
Potion Shop Lanes
Heroes stop at potion shops and buy as many potions as they need before they fight. Recorded gameplay describes that shop income as one of the main money makers, and several shops on one mandatory route keep selling to the same wave.
Treasure Room Pull
Heroes are guaranteed to head for a treasure room, so placing one behind your hazards pulls the wave through your damage instead of letting it beeline for the crystal.
Dead-End Decoys
Wooden floor pieces that lead nowhere send heroes in and back out again. Recorded layouts used stone corridor pieces for the real path and wooden floors as the dead ends.
Build or Trap
Coin or Defense Role
Placement Note
Potion Shop
Sells potions to passing heroes; one of the main Coin earners in recorded runs
On the tiles every hero has to cross, not in an optional side room
Treasure Room
Guarantees that heroes walk toward it
Behind the hazards you want them to cross
Dead End
Wastes hero time and stretches the route
As a decoy beside the real corridor
Tar Pit
Slows heroes down
On the approach to your damage tiles
Oil, Fire Trap and Lava Floor
Oil keeps a hero burning for three tiles, and a lava floor raises fire damage
Layer them on the same mandatory tiles
Spike Trap, Poison Trap, Bear Trap, Falling Rocks
Direct damage to the wave
Along the corridors the heroes must walk
Arrow Trap
Wall-mounted ranged damage
On corridor walls that face the hero path
Boss Room
Boss units inside it get 50% more health and damage
Guarding the crystal
Traps alone will not hold a route. Thief heroes disarm traps within a one-tile radius around themselves, healers restore hero health, and archer heroes can shoot through walls even though your own monster units cannot attack through a wall at all. Keep physical units on the tiles heroes must cross, and put ranged and magic units in open lanes behind them.
Passive Income, Hourly Rate and Booster Timing
The escape menu reports an hourly Coin and Dark Souls rate that is calculated from your highest wave, so reaching a new best wave raises your passive income even when you are not clearing anything. A recorded run at wave 190 showed about 8,400 Coins and 385 Souls per hour, and the official game description confirms that monsters keep catching heroes offline.
Tip
Save Coin and Soul Booster Potions for sessions where you are actively clearing waves, then compare the escape menu hourly rate before and after a layout change to see whether the new route earns more.
The percentage-based skill tree is where Coin income compounds: its nodes include gold rush, soul harvest, unit damage, population, trap mastery and battlecry, and Update 6 moved the 2x Battle Speed upgrade earlier in the tree. Every monster unit you place takes up population, and mutated units add extra population on top of their base cost, so a growing roster needs population headroom before it needs another rare roll.
Warning
A failed defense restarts from the most recent checkpoint, and recorded gameplay shows a checkpoint at wave 10, so a route that leaks heroes costs you every wave between checkpoints. Bank Coins into the route and into the units standing on it before you push for a new best wave.
Frequently Asked Questions
What is the fastest way to farm coins in Build a Dungeon?
Redeem the active codes for Coins and Coin Booster Potions, then line the mandatory hero route with potion shops and a treasure room so every wave walks past your income tiles before it reaches the crystal.
Do Build a Dungeon codes expire?
Community code trackers listed no expired codes as of October 2026, but Roblox code lists change with each update, so claim new codes as soon as the official Discord server or the Exploration Guild community page announces them.
How do booster potions affect my dungeon income?
Coin Booster Potions and Soul Booster Potions temporarily increase what you earn, so use them on sessions where you are clearing waves, and read the escape menu hourly rate to see the effect of a layout change.
Can I earn coins while I am offline?
The official game description states that monsters catch heroes offline, and the escape menu hourly rate is calculated from your highest wave, so a stronger layout keeps paying between sessions.
