SourcePorter

Port your CS:GO / CS:S maps to Counter-Strike 2

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SourcePorter is a user-friendly app that uses Valve's import_map_community scripts to port maps from CS:GO to Counter-Strike 2.

Unique Features

• BSP or VMF input (.bsp / .vmf). The program can automatically decompile a BSP and port it to Source 2 along with its textures and materials.
• Fast imports. By default the port imports all asset sources (materials and models) without the slow per-asset compile, so you can finish the map in Hammer. Tick Compile Assets to also compile them to _c (needed before shipping the addon). Imports use all your CPU cores minus one.
• Addon verification. After each import it finds missing textures and models and reports them in the console. Use Tools → Import missing assets to re-import the ones it can source from CS:GO.

Requirements

• Windows 10 / 11 (64-bit). Valve's import tools are Windows-only.
• Counter-Strike 2 with the Workshop Tools installed.
• A CS:GO install for the original map content.

Build from source

For developers

You need the .NET 9 SDK.

dotnet build SourcePorter.sln               # build
dotnet run --project src/SourcePorter.App   # launch
dotnet test SourcePorter.sln                # test

Design notes live in overview.md, ARCHITECTURE.md, and ROADMAP.md. Contributing? Read AGENTS.md first. Never commit real maps or game assets — they're git-ignored, and tests use synthetic fixtures only.

Credits

• ValveResourceFormat / Source 2 Viewer — the dark theme, the UI icons, and the resource format the validator reads.
• BSPSource — the bundled .bsp → .vmf decompiler.
• ValvePak and ValveKeyValue — VPK and KeyValues reading.
• The S2ZE community and the Map Porting Guide that this tool automates.