GSF Paradise, I remember going around on Singleplayer and adding doors and stuff inside the buildings + hospital, and creating cars, omg the nostalgia, it hurts. I also remember playing with the Pirate Build on the Kitchen, playing on the simple but probably my favorite map Apocalyptic Wasteland, and, probably my biggest memory, going on Bedroom/Kitchen and searching for all the secrets. I had this weird interest to keep looking for secret places, even though I had probably found them all lol. I also made some weird theory that Kitchen and Bedroom were connected idk.