Everyone and their grandma knows about Animal Crossing. Hell, maybe their grandma plays it! If you don't know, or your knowledge is... kinda fuzzy, allow me to help. :]
Animal Crossing is a real-time social-simulation video game where you are a human who lives in a rural community with various animal villagers. There’s no real goals but, instead, the player is encouraged to spend time socialising the residents, customising and taking care of the environment, collecting items, like fish, fossils and bugs. In total, there are five main series games and three spin-off games.
The passage of time is a key part of the series and has been since the first game on the N64 where the game was built for the 64DD. As the games are play in real time, some in-game events, like holidays or growth of plants or building of public works occur at certain times or require some time to have passed. Weather, like snow, happens seasonally with cherry blossom trees blooming in April.
Other important features are the level of customisation available, the allowance of communication between players on-line and off, collecting items and befriending villagers.
I've played Animal Crossing for many years and have had many towns. My Animal Crossing collection is modest. I own Animal Crossing: Wild World, New Leaf, Happy Home Designer, New Horizons and two Amiibo: Isabelle and Rigby. I am always on the lookout for Population Growing and the Sanrio Amiibo Cards when I go to Cex, however that's not very often. I've played New Leaf the most, followed by Happy Home Designer (which I really like despite it not being a main-line game).
My favourite NPC is K.K. Slider and my favourite Villager is Naomi!