SimCity Expansion
SimCity Expansion gives players a manager for building packs, a structure editor and in-game capture of builds, linked to the SimuKraft building mod.
What it does
Players open the manager with a backslash key press in-game, and its bindings can be changed under the mod's category in Options. The left panel holds three tabs, while the right panel lists pack metadata, a preview, the materials a building needs, and any blocks that are missing.
The mod integrates with SimuKraft, which is a compile-time dependency, and it needs SimuKraft installed alongside it. Files are published for Forge and NeoForge, for 1.20.1 and 1.21.1, and the environment is client and server, so the server and every player need it. The dedicated server jar loads headless and exposes a buildpack command, and the same operations are available there. It is released under All rights reserved and is not open source.
Key features
Build pack manager
The manager imports, searches, sorts and batch installs building packs, with drag-and-drop import and two-click delete.
Structure editor
A structure can be refined in the editor before it is installed, with its metadata form editable on the Import tab.
Pack format
Packs use a pack.json manifest with an id, name, version, author and optional icon, plus an index.json file listing each packed file with its type, size and SHA-256 hash.
Litematica and WorldEdit import
Vanilla Litematica and WorldEdit structures can be converted and installed as buildable SimuKraft buildings.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Players who build with SimuKraft buildings and server owners who want a shared library of building packs.
How it compares
DLC Manager is client-side only and is not open source under the All rights reserved license, with files for 1.20.1 – 1.21.1 across Fabric, Forge and NeoForge. Dimension Access Manager is client and server and is not open source, and covers 1.17.1 – 26.3 on Forge and NeoForge, so it reaches versions this mod does not list.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| SimCity Expansion | Forge and NeoForge | 1.20.1 – 1.21.1 | Client and server | 2026-07-02 |
| DLC Manager | Fabric, Forge and NeoForge | 1.20.1 – 1.21.1 | Client-side only | 2026-07-03 |
| Dimension Access Manager | Forge and NeoForge | 1.17.1 – 26.3 | Client and server | 2026-10-10 |
Questions
Does SimCity Expansion need SimuKraft?
Does the server need this mod?
Which loaders and versions are supported?
In the catalog
SimCity Expansion is one of 8,016 Management mods on ModsFinder, and one of 2,698 Management mods for Forge. 32,366 mods support Minecraft 1.21.1.
More from CancriRecoleta
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What the author says
Bring vanilla, Litematica, and WorldEdit structures into the game, convert and install them as buildable SimuKraft buildings, edit them in a Litematica-style manager, and share them as one-click zip packs. SimCity Expansion is a NeoForge mod for Minecraft 1.21.1 that adds a complete building expansion-pack pipeline…
Official listing
- Modrinth page
- modrinth.com/mod/simcityexpansion
- Owner
- CancriRecoleta
- Published
- 2026-03-21
- Updated on Modrinth
- 2026-07-02
- Facts verified
- 2026-10-15