# RimWorld Unstable build update 1.4.3548

- Product: RimWorld (https://whatsnew.fyi/product/rimworld)
- Vendor: Ludeon Studios
- Date: 2022-11-15
- Original notes: https://store.steampowered.com/news/app/294100/view/5940838760396382273
- Permalink: https://whatsnew.fyi/product/rimworld/releases/2022-11-15-unstable-build-update-1.4.3548

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **added** — Xenotype editor is available on the ideoligion creation page
- **added** — Legionaries spawn with needle launchers, a compact version of the needle gun
- **added** — Added build commands for shelves on small shelves and vice versa
- **changed** — Growth vat Essential precept lists growth vat speed increase in tooltip
- **changed** — Clarify some Biotech ideo-related strings
- **changed** — Tesseron beam grasers have 50% armor penetration
- **changed** — Tweaked mechs' combatPower
- **changed** — Scale threat points generated by colony mechs by their combat power and a curve based on colony wealth
- **changed** — Children have a natural slave suppression offset, 50% at age 3 down to 0 at age 16
- **fixed** — Remove null genes from custom xenotypes on load
- **fixed** — Ensure mechs on caravans are unaffected by plague dev gizmo
- **fixed** — Bloodfeeders reviled precept bloodfeeder among us thought is always active
- **fixed** — Foam turrets are considered threats
- **fixed** — Rename terrible / great memory genes to slow / quick study to avoid sharing a name with the great memory trait
- **fixed** — Tesseron weapon doesn't assign pawn as instigator of damage
- **fixed** — Pawns in gene extractors are suspended
- **fixed** — Psychic bonds will strain when a pawn is doing a jump ability
- **fixed** — Germline genes report overridden by xenogene: when no xenogenes are present
- **fixed** — Constructoid description mentions removed weapon
- **fixed** — Kid tribalwear requires complex clothing research

Hi everyone, the _unstable_ branch has just received a new patch. We've gotten some great feedback from the community on our 1.4 content update. Latest changelog below.

The 1.4 content update has cross-expansion integration, gene-modding changes, player-made xenotypes in the world, and lots of other improvements. [Read about it here](https://steamcommunity.com/games/294100/announcements/detail/5940838760383806769)!

Are you interested in helping us test the 1.4 content update? We'd love it if you could share any bugs or issues you find in the [official RimWorld Development Discord](https://discord.gg/MC6eYAHuPu).

_To get access to the unstable branch, go to your Steam library, right-click RimWorld and select "Properties", then select the BETAS tab and choose branch unstable. Restart Steam if your game does not automatically update._

We're trying to keep savegames compatible with mods, but it is the unstable branch so there may be things that break.

Thanks everyone!
- Tia

##### Changelog

- Xenotype editor is available on the ideoligion creation page.
- Growth vat: Essential precept lists growth vat speed increase in tooltip.
- Clarify some Biotech ideo-related strings.
- Remove null genes from custom xenotypes on load.
- Added build commands for shelves on small shelves and vice versa.
- Legionaries spawn with needle launchers, a compact version of the needle gun.
- Tesseron beam grasers have 50% armor penetration.
- Tweaked mechs' combatPower.
- Scale threat points generated by colony mechs by their combat power and a curve based on colony wealth.
- Children have a natural slave suppression offset. 50% at age 3 down to 0 at age 16.
- Ensure mechs on caravans are unaffected by plague dev gizmo.
- Fix: Bloodfeeders reviled precept "bloodfeeder among us" thought is always active.
- Fix: Foam turrets are considered threats.
- Fix: Rename "terrible / great memory" genes to "slow / quick study" to avoid sharing a name with the great memory trait.
- Fix: Tesseron weapon doesn't assign pawn as instigator of damage.
- Fix: Pawns in gene extractors are suspended.
- Fix: Psychic bonds will strain when a pawn is doing a jump ability.
- Fix: Germline genes report "overridden by xenogene:" when no xenogenes are present.
- Fix: Constructoid description mentions removed weapon.
- Fix: Kid tribalwear requires complex clothing research.
- Fix: Newly gestated cleansweeper mechs using incorrect texture.
- Fix: Preferred xenotypes for ideoligions not working correctly in some circumstances.
- Fix: "Skill level" in the psychic power ability tooltip.
- Fix: Skill name in lesson giving/taking report string not translatable.
- Fix: Carrying thing offset for children.
- Fix: Manually added "s"-suffix to [soldiers0_kind] strings.
- Fix: Polux trees cannot be planted without Ideology installed.
- Fix: Body part group tags debug output not working.
- Fix: Duplicate genes displaying in extraction message.
- Fix: When shuffling parents genes into child, list is not cleared, making it always fail after the first attempt.