This is a folder frame for server mods, you simply extract it to your username/appdata/local/Uber Entertainment/Planetary Annihilation/server_mods. It will extract a mods.json already wrote to turn on the mod when you host a game, a GenericServerMod folder, a modinfo inside GenericServerMod folder, a ReadMe inside GenericServerMod folder, and a structure of folders mimicing the vanilla PAexeLOCATION/media folder that one would use to mod. To create small tweaks to your vanilla game or quickly start making your own server mod, start with this. Inside the readme are tips on how to make small changes to the game, such as removing units, pulling json files from vanilla copy and editing unit values, and such. This does come with a unit_list.json by default, by popular demand.