I can't pick a favorite, I've had so many good times on the maps in this game. I would say Bedroom because I've spent so much time on it, but I have especially fond memories of playing on a full server on a GSF map. Can't remember which one, I think it was Paradise. I don't remember what exactly we were doing on the server, but it was fun as hell.
I have so many memories from my early days here. Thinking about them almost brings a tear to my eye, they remind me of a time when I wasn't in high school and had time and motivation to dedicate myself to Blockland :')