01
Get Clay from enemies or merchants
The September 7 revision of Prima's Clay guide names Acid Slogels and Predatory Frogs as early sources and recommends checking merchants for larger purchases. It reports Acid Slogels from Floor 3 onward, but that floor claim has not been independently reproduced here. Target these enemies when the party can safely handle them and inspect the loot. A failed drop does not prove the wrong enemy: no guaranteed drop rate is established.
For later gathering, the database labeled v0.4.19 lists Small and Medium Dirt Rocks in Festering Burrow as Clay sources. This is a single-source location lead, not a tested route. Its merchant entry also points to Festering Burrow; stock quantities and refresh rules remain 待确认. The official v0.3.21 promise of abundant Clay at rank-two Guild Traders explicitly applied to the Demo, so it is not an Early Access stock guarantee.
02
Why early supplies matter
An Early Access recording uploaded on September 5 shows a player lacking Clay for farmland. That supports its role as an early construction bottleneck, rather than proving a universal research order. The available written sources also associate it with pottery and production facilities. Check the recipe you are trying to complete before treating every possible Clay use as equally urgent.
03
What changed in v0.4.19
The official v0.4.19 notes confirm lighter Bone, Clay, Stone, hard shells, and copper and silver ores and ingots. They also remove the item-drop quantity penalty on Very Hard and Devastation Management difficulty. This changes carrying and yield comparisons with older guides; it does not establish a new drop probability. Exact current weights and tested yields remain 待确认 because the announcement provides no numerical replacement table.
The older GamesRef rate and refreshed Wiki rate still disagree for Acid Slogel. Do not turn either percentage into a guaranteed farming estimate. Likewise, the Wiki's Dirt Wall loot record has no normal room-placement entry. Use encountered enemies or identified resource nodes rather than treating that record as a proven Clay farm.
04
Bone
Look for Bone Piles and Shabby Skull Totems as gathering targets, or inspect monster loot and merchant stock. Those named sources are recorded in the refreshed v0.4.19 database. Their current spawn rates and yields remain single-source information.
Reported material sources
The refreshed source places Bone Piles and Shabby Skull Totems in Festering Burrow and identifies them as gatherable objects. It also lists Red Monster Rat among Bone-dropping enemies and Bone in some merchant pools. These are distinct acquisition methods: gathering a placed object is not the same as looting every dead monster. The region and merchant claims are single-source leads, not guaranteed encounters.
Equipment and repair uses
Bone feeds equipment crafting and repairs in the database, while earlier footage independently demonstrates bone equipment. Save it for a recipe you can actually produce. The refreshed research table lists Hunting Processing before Bone Processing; the full chain is discussed under Research. Exact recipe and repair quantities are not independently confirmed.
What to check before farming
The old GamesRef table includes Predatory Frog as a Bone source, while the refreshed Wiki's Bone list does not. That discrepancy is unresolved, so this guide does not recommend Frogs specifically for Bone. Frogs remain a reported Clay source in the separate Clay guide. Guaranteed early Bone locations, medicine recipes and farming yields remain 待确认.
05
Copper
The v0.4.19 database points to Small and Medium Copper Nodes in Festering Burrow. Gather Copper Ore, then check the Kiln's Copper Ingot recipe. This is a single-source production and location lead; a complete route has not been independently demonstrated.
Ore and processed materials
Copper Ore and Copper Ingot are separate items. The refreshed item entry connects the ore to ingot production at a Kiln. Its research table associates the Kiln with Metal Processing. Check which item the blocked recipe requests before collecting more ore; exact recipe costs remain 待确认.
Location claims need checking
The database lists Small and Medium Copper Nodes on Festering Burrow's own floors 2–4. This does not mean floors 2–4 of the first region. These are possible generated resource rooms rather than a fixed corridor to revisit. Floor availability is still single-source and no guaranteed spawn percentage is published here.
Avoid an unplaced mining target
The same database contains a Large Copper Node but reports no room or base-area layout placing it in that build. An item record alone therefore does not establish an accessible farming spot. Start from the Small or Medium nodes you actually encounter. Do not plan a guaranteed Large Copper Node route from its larger listed yield.