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High level overview of Space Engineers 2 related development. Start here to understand the ecosystem (game client, Pulsar, PluginHub-SE2) and to route to the right se2-dev-* skill for plugins, mods, and decompiled code/handbook reference.
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Based on SOC occupation classification
| name | se2-dev |
| description | High level overview of Space Engineers 2 related development. Start here to understand the ecosystem (game client, Pulsar, PluginHub-SE2) and to route to the right se2-dev-* skill for plugins, mods, and decompiled code/handbook reference. |
| license | MIT |
| allowed-tools | Read |
Applies only to Space Engineers version 2.
Entry point and table of contents for se2-dev-* skills. Read this first to get the
big picture, then open the specific skill the task needs. Does not perform searches or builds
itself — routes you to the skill that does.
SE2 is in early access and its extension surface is still growing. Today only plugins are a full development target; the rest of this page says what exists now and what does not.
| Layer | What it is | Runs as | Status | Skill |
|---|---|---|---|---|
| Plugin | .NET DLL patching the game with Harmony, loaded by Pulsar | Unsandboxed, full .NET | Available | se2-dev-plugin |
| Mod | Steam Workshop content, loaded by the game | Sandboxed | Evolving; no dedicated skill yet | see Guide.md |
| In-game script | Programmable Block code | — | Not yet in SE2 | — |
Plugins run native code with no sandbox — they can do anything, which is why they are open source and reviewed before release. Client-side-only workshop mods can be registered to Pulsar so its registry lists them; that flow is documented in the plugin skill's Guide.md, not in a separate mod skill.
SE2 has no dedicated server and no Torch equivalent yet, so every plugin currently targets the game client.
| Game client | |
|---|---|
| Loader | Pulsar (installed via Pulsar-Installer) |
| Registry | PluginHub-SE2 |
| Admin UI | in-game config dialog |
| Skill | se2-dev-plugin |
Pulsar lists and loads plugins from PluginHub-SE2 and compiles them from source on the player's machine, pinned to the GitHub commit the registration names. Server-side plugin hosting (the SE1 Magnetar/Quasar stack) has no SE2 counterpart yet.
Do not carry SE1 assumptions over. The se-dev-* skills describe a different game with a
different API surface; SE1 plugins are not SE2 plugins.
Content. Recommended companion for any plugin work.The se2-dev-game-book handbook — AI-generated summaries of game types organised by
inheritance hierarchy — is private/internal, distributed separately and not part of this
public repository. Use it if it is installed; otherwise fall back to se2-dev-game-code.
graphify-out/. Prepare installs Graphify on Python 3.12 with the fast native Rust Leiden clustering backend and, when that backend is available (Linux/Windows with uv), builds the graph automatically — clustering then takes ~1-2 minutes even for the decompiled game corpus. Where the fast backend cannot be provisioned, Graphify stays optional and only builds on opt-in with SE2_DEV_GRAPHIFY=1 (the slow single-core fallback adds ~10-30 minutes on the game corpus; small corpora stay quick). SE2_DEV_GRAPHIFY=0 disables it entirely. Also covers the health check that detects an unusable (unclustered) graph and the clean-and-rebuild flow.query/explain/path/affected), the large-graph load cap, and the query test scripts.These two docs are fetched on demand: skip them entirely unless the user specifically wants the Graphify graph, so the extra tooling never pollutes context during normal work.
se2-dev-plugin + se2-dev-game-code (and se2-dev-game-book for orientation).se2-dev-plugin, following its Review.md.se2-dev-game-code to search the source, se2-dev-game-book for orientation.se2-dev-plugin, following its Guide.md.Most non-trivial tasks pair the authoring skill with a reference skill: write with one, look up the game's internals with the other.
README after cloning.Original source of these skills: https://github.com/CometWorks/skills2