Favorite??? I started playing at the beginning of the Sims3. I mostly play 4 now because it's faster to play, but Sims remains my favorite for all the content, the open world, being able to really be in control of a whole household, being able to control the whole household no matter where one of your sims were at, being able to see around the whole world without going there to see where other sims were, babies freed, color wheel, World Adventures, video games, riders/playpen/walker/ect. for toddlers, swings/play mats/strollers/carseats for infants, cars of all kinds, casinos, elevators, houseboats, being able to make your own resort, place for mermaids, being able to make our own worlds and place lots, cemeteries, Gunther Goth, being able to make any supernatural you want from CAS including plant sims, being able to select boy/girl friend from CAS relationships, signs and favorite foods for sims in CAS, pizza oven, unicorns/dragons/birds/reptiles/real fish tanks and fish to collect/real collecting/bugs, sculptor station, bikes for all, kissing booth, and too much more to recall. Even though it isn't a pack that is what I loved from the Sims3. Packs? Hard to say. I love World Adventures, LateNightCity-vampires, Island Paradise, Generations, Lucky Palms/the casino from the store. To pick one... between World Adventures, Island Paradise, and Generations. I didn't use mods, cc, and had a decent computer, so I didn't have the problems others had and I played all packs and the complete store at the same time.