# File formats

- [FGD file format](/appendix/resources/formats/fgd.md): entity definition file / mapping aid for Quake-era level editors
- [MAP file format](/appendix/resources/formats/map.md): file format spec + sample parser code for Quake .MAP files ("Valve" style, mapversion 220)
- [MDL file format](/appendix/resources/formats/mdl.md): how to parse Quake 1 models (.MDL) and sample C source code for rendering in 3D