A practical how-to walks through obtaining high-resolution raster tiles of the fictional Chernarus map (from Arma II/DayZ), stitching them into one image, georeferencing that image to the real landscape near Ústí nad Labem in Czechia, and loading the result onto a Garmin handheld for in-field use. It gives concrete commands and URLs (e.g. the iZurvive tileserver pattern), shows a shell loop to download tiles at zoom 6 and a montage/Imagemagick pipeline to assemble them, and notes quirks like mislabeled .png files that are actually JPEGs. The author demonstrates that many in-game buildings align with the real area and used the georeferenced map while hiking.
The georeferencing workflow is QGIS-based: convert the stitched image to PNG, add 10-15 ground control points by matching recognizable road/junction features, choose Polynomial 2 transform and suitable resampling, and aim for residuals under ~10 px. Set the target SRS to EPSG:4326 for Garmin compatibility, export a GeoTIFF, then use GDAL-backed Python tools (gdal2kml.py and kml2kmz.py) to produce a chernarus.kmz. Finally, copy the KMZ to /Garmin/CustomMaps/, reboot and enable the custom map on the device. Practical tips for GDAL installation on Linux/Windows and display tweaks (Multiply blending) are included.
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