How to download Add-Ons:
Go to C:\Program Files\Blockland (If you have a Mac, consult someone else). Remember this location by adding a shortcut or something. If the Add-On's name looks like this (category_name), put it in Blockland/Add-Ons. Do NOT extract the files. They must remain a .zip file. If the add-on is a .bls file, put it in Blockland\saves\-insert map name here-. Run Blockland. If you wan to start a server with these add-ons, press Start A Game>Add-Ons and enable the add-on. The add-on list is alphabetically ordered by category. Now start your game. Saves are already there. Just go to the map where you saved the .bls file, press ESC>Load Bricks, locate the save name, and load it.