The named constructs
These come from the Steam guide Efficient Solo Strategy, which is the only source we have found that names constructs individually and attaches numbers to them.
| Construct | What it does | Scrap |
|---|---|---|
| Lantern | Explodes when thrown or smashed — 72 damage per blast | 80 |
| Radiator | Explodes when broken — roughly 40 damage, blocks a corridor while intact | 120 |
| Bed | Full heal, anywhere you place it | 150 |
| Floor Fan | Hit the shell and it becomes a weapon | Not stated |
| Crate | Buildable anywhere, holds items | Not stated |
Lantern
80 scrap. Explodes for 72 damage. This is the construct the whole guide is built around:
Four lantern explosions kill any enemy.
The guide budgets 370 scrap for its emergency kit — a crate plus four lanterns. That is a portable answer to anything the floor throws at you, carried in one hand.
How to set one off. A lantern detonates after taking 70 damage, and there are two practical ways to deliver it:
- Straight-arm ground smack — about 27 damage per hit — then throw it
- Two hits with a hammer
⚠️ One documented exception. The guide singles out the soul reaper as the enemy this does not solve, in exactly those terms: "he is a DEMON."
Radiator
120 scrap. Roughly 40 damage when broken. A radiator blocks a corridor, and enemies have to deal with it. The guide's claim is specific: every enemy except the Club-Giant will smash through objects blocking its path.
So a radiator is a delay against most things and an actual wall against a Club-Giant. When it does break, it deals roughly 40 damage to whatever is standing next to it — which is the other reason to put one in a doorway.
Bed
150 scrap for a full heal, placeable anywhere. The guide's advice on timing is specific: drop one right after clearing a wave, not during. Enemies spawn in waves, and with the reinforcement modifier active they come two per wave.
Beds can also be found in the dungeon rather than built.
Floor Fan
Hit the shell and it becomes a weapon. That is the entire description the guide gives it. Its scrap cost is not stated anywhere we have found.
Crate
Buildable anywhere, holds items. It is the container half of the emergency kit — a crate plus four lanterns, which the guide prices at 370 scrap total.
⚠️ Its own cost is not stated. Four lanterns at 80 each is 320, which would leave about 50 scrap for the crate — but that is our arithmetic, not a number the guide gives.
Mini robots: goat, ant and monkey
Distinct from the buildable constructs above. The Steam guide Tips and tricks lists three mini robots in the dungeon — a goat, an ant and a monkey.
They cost orange orbs, and orange orbs only drop after you beat a boss. That is the gate. If you are wondering why you have never built one, that is why.
(Not to be confused with purple orbs, which are furniture blueprints for the Outpost.)
Ant
Burns away radiation. This is the only mini-robot ability any source describes.
Goat and monkey
We do not know what they do. The guide names them and stops there. If you have built one, that is information this page does not have.
Yellow Gumballs
A separate thread, Yellow Gumball (potential spoilers), covers a different unlock currency:
"You need them to unlock the last 3 constructs currently in game."
Note currently in game — that is a snapshot, not a permanent total.
Where Gumballs come from
| Source | Detail |
|---|---|
| Clown boss, below depth 10 | "a guaranteed legendary Gumball on the podium to begin the boss fight" |
| Boss rooms generally | The thread's author saw one in their first boss room |
| Round 7 | "sometimes find at round 7 but it's rare" |
| Level 5 | One player found one at level 5 |
⚠️ If a legendary Gumball once gave you nothing, that was a bug. Patch 1.06 (11 August 2026) lists: "Fixed a bug where a legendary gumball would not give any reward." Worth re-running if you wrote one off before then.
The Clown boss
Described as findable below depth 10, distinct from the Corrupted Elite portal encounter. Weapons break in these fights — one player found a Gumball at level 5 and still lost because their weapons broke.
"Little Buddy" is a follower, and it is a separate thing
Patch 1.04 added "start/stop follow animation and sound for Little Buddy" — so there is a companion that follows you and can be told to stop.
⚠️ The community uses "construct" for both. In the Gumball thread a player answers the question "what are constructs" with "the little buddies", while the solo guide uses the word for lanterns, crates and beds. We cannot tell you which the game's own menus call what, and we are not going to pretend the ambiguity is not there — if you are following a guide, check which sense it means.
More are coming
The developers' roadmap (12 August 2026) promises a batch of new constructs and a new vessel within a month, stated as a monthly goal rather than a fixed date.
What is not confirmed
- The scrap cost of Floor Fan and Crate — the crate figure above is our arithmetic
- Which of these the game itself files under "constructs" — see the terminology note above
- How many constructs exist in total, and which three the Gumballs unlock
- What the goat and monkey robots do. Only the ant's radiation-burning is described
- Whether Gumball rarity tiers beyond "legendary" exist
- Whether constructs are permanent unlocks or per-run