Don't use cargo but install the distribution package instead.

Hope 2026 will be good for us all.

I looked a bit in to it. The files are stored as .dae files. You should learn how to convert them to .stl so you can do it yourself and chose which model you like. Blender can export to stl and here is the wiki for blender. However I couldn't import it easy in blender since import .dae wasn't listed (arch linux) and I couldn't solve it in a reasonable time (tried searching addons inside blender, packages in the arch repo and chatGPT). I found this: https://docs.blender.org/manual/en/4.5/files/import_export/collada.html But it was a bit tl;dr at one time. I could load the models in FreeCAD which can also convert it to stl. Your slicer then should be able to scale the unit up or down. Tbh. there might be nicer models to print on thingyverse or so which take in to account that arms/arrows aren't so thin so they don't break. But converting the 0ad models shouldn't be too hard and also feasable. Other question that comes up: What's 0ad's plan if .dae support ends?

@Stan`

The update to the build instructions is planned, but it will only be done for the release, not before. Right now, users are still downloading 27.1 from the website. Thanks for the reminder anyway!