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NKit is a multiplatform disc image processor for game preservation — convert, extract, scan, verify, fix, and deduplicate disc images across 14 gaming systems, reading directly from archives with no temp files.
NKDS (NKit DataStore) extends NKit with a content-addressed block store: deduplicate your entire collection to ~80% space savings, then mount it as a virtual drive so emulators see regular ISOs with no extraction needed.
Both ship as native AOT binaries — no .NET runtime required. Download the latest release and run directly.
Source code: github.com/Nanook/NKit — contributions and bug reports welcome.
I'm new — where do I start? → Getting Started
I want to convert, scan, verify or extract disc images → NKit Features · Processing Tasks · CLI Reference
I want to store my collection and mount it as a virtual drive → NKDS Overview · NKDS CLI · OGMR — per-game sets
I want to understand the storage format and data safety → NKDS Storage Model · NKDS Data Safety · NKDS Binary Format · NkFs Format
I want to embed NKit/NKDS in my own project → Architecture · Developer Guide
I want to build from source or contribute → Getting Started · Contributing
I want to see what's changed or what's planned → Current Status · Roadmap
| Page | Description |
|---|---|
| NKit Features | System support, formats, archive handling |
| NKit Processing Tasks | What each task does and which systems support it |
| NKit CLI | Full parameter reference, config setup, examples |
| NKit CLI Cheat Sheet | Quick copy-paste examples |
| NKit Verify | How verification methods work and when each fires |
| NKit Scan Format | The .nkit.yaml scan file — structure, container independence, verification use |
| NKit File Masks | Wildcard, archive, and regex mask syntax |
| NKit File Scanning | How NKit discovers and groups input files |
| Page | Description |
|---|---|
| NKDS User Guide | Complete user guide — CLI commands, UI application, quick start, examples |
| NKDS | Core concepts, deduplication, VFS, storage modes |
| NKDS CLI | Full command reference and quick start |
| NKDS CLI Cheat Sheet | Quick examples for all nkds commands |
| NKDS OGMR | One Game Many ROMs — per-game embedded sets |
| NKDS Storage Model | How writes, crash safety, and compaction work |
| NKDS Data Safety | What is safe, what compaction does, what changed in v3 |
| NKDS Binary Format | NKitDataStore on-disk binary format — shards, index, block map |
| NKDS NkFs Format | NkFs compact binary filesystem format used inside NKDS images |
| Page | Description |
|---|---|
| Architecture | Design principles and how NKit + NKDS fit together |
| Developer Guide | Embedding the libraries, contributing, testing |
| Getting Started | Install, first run, quick start examples |
| Contributing | Build from source, run tests, submit a PR |
| Current Status | Recent changes, known issues, upcoming work |
| Roadmap | Planned features |
| Credits | Acknowledgements |
| Links | Discord, YouTube, Ko-fi, GitHub, related projects |