Source-checkedQuality of life & UI

Placement++

by unholyzealot · for Core Keeper

Area-work toolkit for builders: place blocks and seeds in up to 9x9 grids and lines, work with shovel/hoe/roofing tool/watering can at up to 9x9, and control the sledgehammer's size and hit shape in game. Multiplayer & dedicated server support.

1.5KDownloads
2 mo agoLast updated
1.2.1.5Latest game version
mod.ioSource

About Placement++

From mod.io

Area-work toolkit for builders: place blocks and seeds in up to 9x9 grids and lines, work with shovel/hoe/roofing tool/watering can at up to 9x9, and control the sledgehammer's size and hit shape in game. Multiplayer & dedicated server support.

Placement++ is a building-focused overhaul based on Limoka's PlacementPlus, merged with Tool Resizer's tool scaling and extended with sledgehammer support, a creative void brush, previews and Korean localization. The goal: every area-work action a builder needs, in one mod.

한국어 안내는 아래쪽에 있습니다.


Features

Grid placement

  • Place most 1x1 objects — walls, floors, tiles, seeds — in squares or lines, 9x9 by default (configurable up to 15x15)
  • Four brush shapes: horizontal line, vertical line, square, off (cycle with C)
  • Hold Alt to replace existing tiles; toggle mode swaps BOTH layers of a cell (wall + the ground under it), and replacing works under placed objects and walls
  • Materials are consumed normally; digging and mining use the durability of the shovel/pickaxe in your inventory. With god mode on, placing and replacing are free — no items, no durability, no drops
  • Workbenches, doors and similar are excluded by default so you don't place nine of them by accident — configurable

REMOVE mode — creative void brush

  • In creative worlds the wall-block mode cycle (V) gains a fourth mode: REMOVE
  • It voids every layer of the brushed area at once — ground-only and ground+wall cells alike — and the holes persist through save/load
  • Free of cost. Perfect for carving skyblock-style maps. Not available outside creative worlds

Tool area work (Tool Resizer merged and extended)

  • Shovel, hoe, roofing tool and watering can work at up to 9x9 regardless of tool tier (resize with R or +/-)
  • Shovel, hoe and roofing tool also follow the brush shape — dig a single row, mow a single column, and so on
  • The preview matches the actual work area exactly

Roofing tool modes (V key)

  • DEFAULT: stock behavior (fills if the area is fully open, punches otherwise)
  • CLOSE ROOF: only fills · OPEN ROOF: only punches
  • All three respect brush size and shape

Paint brush

  • Paint whole areas at once following brush size and shape, with a preview
  • Cycle colors with V

Sledgehammer

  • Four sizes: 3x3 (stock) → 5x5 → 7x7 → 9x9, with +/- while holding it
  • Two hit shapes (V key): SQUARE — an NxN box around the impact, for demolition; ARC — the stock swing grown to size, a wide swath in front (e.g. 9x5)
  • A low-opacity preview shows where tiles will break; toggle and opacity are in the config menu and apply instantly
  • In multiplayer the size and shape are server-wide values — admins only, changes are synced and announced to everyone

Localization

  • Korean in-game messages and config menu names when the game language is Korean; English otherwise

Controls

(rebindable in the game's control settings)

  • Numpad +/- — brush / tool / sledgehammer size (hold for auto-repeat)
  • C — brush shape: horizontal → vertical → square → off (tools skip "off")
  • V — tool mode: roofing DEFAULT/CLOSE/OPEN, wall blocks toggle/ground/wall (+REMOVE in creative), paint colors, sledgehammer SQUARE/ARC
  • CapsLock + V — cycle backwards
  • Hold LeftAlt — replace existing tiles

Settings

  • Max Brush Size (default 9) — shared cap for brush and tools, adjustable 3–15; the "9x9" on this page is the default (tool caps apply after a restart; the sledgehammer is capped at 9x9 by the game itself)
  • Allow Wall Variants (off) — let items with wall-mounted variants (torches, doors, lamps) into the brush; orientations may come out odd
  • Ignore Builtin Exclude (off) — allow brush placement of workbenches, doors, minecarts and other excluded items
  • Sledgehammer Preview (on) and Preview Opacity (0.15, applies instantly)

Multiplayer / Dedicated servers

  • Install on both client and server
  • Sledgehammer size/shape can only be changed by admins listed in Admins.json (no restriction in singleplayer)
  • Since 1.2.0 dedicated servers work out of the box — do NOT rename lib_burst_generated.dll anymore. If you renamed it for an earlier version, restore the original name (or let a server update restore it): the workaround is no longer needed, and running the server without that native code costs real performance (rubber-banding when things get busy).

Requirements

  • CoreLib (required)
  • General Mod Config Menu recommended for the in-game settings menu (the cfg file works without it)
  • Disable the original PlacementPlus and Tool Resizer while using this mod — it replaces both

Known limitations

  • Objects larger than 1x1 (beds etc.) cannot be brush-placed
  • The sledgehammer's attack shape and tile shape come from one value — "arc attack + square tiles" is not possible; in ARC shape the size number is the swath's width (5 → 5x3, 7 → 7x5, 9 → 9x5)
  • The preview can shift by one tile as you move within a tile — it always matches where the hit actually lands
  • Bucket and watering can support square areas only (no brush shapes)

Credits

  • Original mod: Limoka (mod.io: limoka8) — PlacementPlus (MIT license, included)
  • Tool scaling idea: LordOfCloud — Tool Resizer
  • Sledgehammer range approach: ReishyouSose — Quality of Core Keeper

한국어 안내

Placement++ 는 Limoka의 PlacementPlus를 바탕으로 Tool Resizer의 도구 확장을 흡수하고, 대형망치 지원·크리에이티브 제거 브러시·미리보기·한국어를 얹은 건축 특화 통합판입니다.

주요 기능

  • 브러시 면적 설치 — 벽·바닥·타일·씨앗 등 1x1 배치물 대부분을 사각형/줄로 한 번에 설치 (기본 9x9, 설정으로 15x15까지). 모양 4종: 가로줄·세로줄·사각형·끔 (C키). Alt를 누른 채 설치하면 기존 타일 교체 — 동시 모드는 벽+바닥 양층을 한 번에 갈고, 물건·벽 아래 타일도 교체됨. 갓 모드에서는 설치·교체가 완전 무료 (아이템·내구도·드랍 없음)

Read the full description on mod.io →

Highlights

From source data

Game versions

Built for Core Keeper 1.2.1.5.

Footprint

Rated a light load on a server.

Last update

Its author last shipped an update 2 mo ago.

Placement++ on Nxeon

From our catalogue
One-click install
Supported on Nxeon Core Keeper servers. We download it from mod.io, place it, and restart the server.
Server side
Required on the server
Server load
light
Smallest plan we suggest
Core Keeper — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
Latest build
1.2.5, released 2026-08-27

Run Placement++ on a Core Keeper server

Pick a server or deploy a new one above; it is installed in one click.

What kind of mod it is

From the catalog
Listed on mod.io as “Quality of Life”

Quality of life & UI

Small conveniences, tweaks and interface improvements players notice straight away.

Runs on your server

From source side support

mod.io lists Placement++ as required on the server. Check its mod.io page to see whether players need it too.

Compatibility

Game
Core Keeper
Runs on
Serverrequired on the server
Game versions
1.2.1.5

Verified at the source

  • ✓mod.ioOfficial listing, checked 2026-11-04Open ↗
  • ✓Authorunholyzealot, as published on mod.io
  • ✓LicenseNot published by the sourceFree

Placement++, answered

Generated from the mod’s own source data.

Do my players need to install Placement++?

mod.io lists Placement++ as required on the server. Check its mod.io page to see whether players need it too.

Is it free?

Yes. Placement++ is free to download from mod.io.

How do I add it to my Nxeon server?

Use “Add to a server” on this page, or open NxLabs from your dashboard. We install it, restart your server and switch it on.

NxLabs

Run Placement++ on a Core Keeper server.

Deploy in about a minute from $4.99 a month, then add Placement++ in one click.