Build a Base RNG Wiki

Build a Base RNG Crafting Recipes

The crafting machine prints its own outcome table, so these recipes are copied rather than estimated. Crafting is how you leave the early roll table behind: you feed surplus objects (and relics) into a machine that returns a pull from a much better list, and relic recipes even roll Shiny or Galaxy on the result.

Updated 6 of 21 recipes verified so far.

Build a Base RNG crafting machine showing the Wizard Tower relic recipe and inventory
Crafting machine with 21/21 recipes found — Wizard Tower recipe and Galaxy inventory.

Refined + Epic → Legendary

Observed
10× Refined+20× Epic

The bread-and-butter recipe. Half the time it hands back a Wooden Tesla, which is a far rarer pull from the roll table. Bank Refined and Epic objects instead of placing every one you roll once your plot is full.

Crafting UI for Refined plus Epic into Legendary with result percentages
Tier-up recipe screen — 52% Wooden Tesla, copied from the machine.

Possible results

Refined + Crooked Skull Relic → Heavy Harpoon

Observed
20× Refined+1× Crooked Skull Relic

The only relic recipe observed with an 88/11/1 mutation split instead of 92/7/1. Still the practical route to a Shiny or Galaxy Harpoon.

Crafting machine Heavy Harpoon recipe with Crooked Skull Relic
Heavy Harpoon recipe — Crooked Skull Relic plus 20 Refined.

Possible results

Legendary + Burger Relic → Arrow Turret

Observed
20× Legendary+1× Burger Relic

Standard 92/7/1 mutation roll. Burger Relic is consumed; the result is a fixed craft-only turret rather than a random Legendary.

Possible results

Shiny Basic Cannon + Mythic + Barbell Relic → Reinforced Cannon

Observed
5× Shiny Basic Cannon+20× Mythic+1× Barbell Relic

The first recipe that asks for a specific mutated object rather than any object of a given rarity. You need five Shiny Basic Cannons before this craft unlocks in practice.

Reinforced Cannon recipe requiring Shiny Basic Cannon, Mythic, and Barbell Relic
Reinforced Cannon — needs 5× Shiny Basic Cannon as a named material.

Possible results

Legendary + Soda Relic → Deep fryer

Observed
20× Legendary+1× Soda Relic

The inputs and the result were on screen; the mutation split was not. Every other relic recipe rolls 92/7/1, so this one very likely does too — but we only publish the part we actually saw.

Deep fryer and Arrow Turret recipes on the crafting machine
Soda Relic → Deep fryer listed alongside the Burger Relic recipe.

Possible results

Witch Brew + Primordial + Wizard Hat Relic → Wizard Tower

Observed
15× Witch Brew+5× Primordial+1× Wizard Hat Relic

Uses Witch Brew as a named item stack (15×), not a free rarity slot. At endgame inventories this craft often sits next to Galaxy variants already banked from other recipes.

Wizard Tower crafting recipe with Witch Brew and Wizard Hat Relic
Wizard Tower recipe — 15 Witch Brew, 5 Primordial, 1 Wizard Hat Relic.

Possible results

Relics are ingredients, not passive buffs

Five relics have turned up so far — Crooked Skull, Burger, Barbell, Wizard Hat and Soda — and every one of them is consumed by a recipe rather than equipped. Descriptions elsewhere that sort relics into three permanent character bonuses do not match what the crafting screen actually shows.

The mutation roll is part of the craft

Every relic recipe rolls its own mutation on top of the result: 92% plain, 7% Shiny, 1% Galaxy, with one recipe (Heavy Harpoon) showing 88/11/1. That makes crafting the most reliable route to a Galaxy object, since pulling one from the roll table is far rarer.

Index Galaxy tab showing Galaxy-tier objects
Galaxy tab of the index — mutation results are tracked as separate collection slots.

How to use the machine

Walk up to the Crafting Machine on the map, open the recipe list, and feed the exact materials shown. Named items (Witch Brew, Shiny Basic Cannon) must match that object, not just its rarity. Rarity slots accept any object of that tier. Results go to inventory; place them from Build mode like any other object.

Coverage

The machine counts 21 recipes and six are reproduced here with screenshots. Two more are gated by wave (observed at wave 75 and wave 225) with names not yet readable. The rest will be added as they are seen rather than filled in from guesswork.

FAQ

Build a Base RNG Crafting Recipes FAQ

Is crafting better than rolling?

For anything above Refined, yes. The tier-up recipe returns a Wooden Tesla 52% of the time, and the same object from the roll table is a small fraction of a percent.

How do I get a Galaxy object?

Craft for it. Relic recipes roll Galaxy 1% of the time (11% Shiny / 1% Galaxy on Heavy Harpoon), far better than the roll table. A Galaxy object was measured at 10.5× the health of its plain version on Wood Block.

Where do relics come from?

Almost certainly bosses. The shop sells a gamepass called 2x Boss Drops, which only makes sense if bosses drop something, and relics are what every crafting recipe keeps asking for. No actual drop was captured on camera in the footage reviewed, so this is inference rather than a confirmed sighting.

Do I need Shiny Basic Cannons before Reinforced Cannon?

Yes. That recipe lists 5× Shiny Basic Cannon as a specific material. Unlock the Shiny mutation path (Shiny Objects skill at 10,000 coins) and bank Shiny Basic Cannons until you have five.

How many recipes are there?

The machine header shows 21 recipes found when fully unlocked. This page documents six with full outcome tables and screenshots.