According to EA, the franchise passed the one-hundred-million-units mark during the series is known to be extremely addictive in most and/or all of its variants.
The game includes tools which allows you to export your houses, Sims, and neighborhoods as Downloadable Content for other people; and, as mentioned, there is a huge variety of unofficial Game Mods which change the way the game functions.
It can be more fun to let this happen if you're feeling sadistic, or just like to see your Sims implode, have their house catch on fire, or die en masse. Here are the main titles in the franchise so far: The three mainline games have had, as of 2013, at least seven Expansion Packs each, all of which add new features, permutations and gameplay options (such as the ability to become vampires or plant-creatures, go to college or on vacations, own pets, open your own business, and so on).
Alternately, you can set up your own little Soap Opera, or recreate your favorite fictional characters, or even just play normally. The two sequels also have a number of "Stuff Packs" associated with them; these only provide new objects as opposed to gameplay functions.
Our sports games are simulation based, which means you set up your teams and players, train them, and then our computers simulate the results each night.
Consider yourself a virtual sports manager or coach!
The more green blobs you get the higher your score will be.