Khullja Sim Sim was created in 2001-07.
Khullja Sim Sim ended in 2004.
Galli Galli Sim Sim was created on 2006-08-15.
SIM University was created in 2005.
Sim Brick was created in 1991.
Göteborg Sim was created in 1991.
Bon Voyage Sim was created in 1966.
Sim-Feng Shui was created in 1997.
Sim RPG Maker was created in 1998.
Sim e Não was created in 2006.
Sim - album - was created on 2007-05-28.
The Terrible Privacy of Maxwell Sim was created in 2010.
Sim Smith Covered Bridge was created in 1883.
If it is a sim that you created, there is a Family Bin when you edit town that your sim (and the whole family they were part of) will be preserved in it's original state. It can be placed into the town and merged into the family you had it in, but it will be like a brand new sim. If it was not a created sim, but a game-generated sim, there is no way to recover it.