Game over

In The Sims series, a Game Over occurs when there are no more playable Sims in a household. This can be caused by death, or when there is only children living which result in being taken away by the Social Worker.

The Sims
In The Sims, there is no Game Over screen and the lot remains played. All modes are avalable.

The Sims 2
The Sims 2 introduced a Game Over screen featuring various dialouges of the Grim Reaper known as The Finale. After the last Sim dies, Time is paused and the player loses control of Live Mode. The lot is still played for Build and Buy Mode, but using the remaining funds the household had.

The Sims 3
The Sims 3 has a Game Over screen known as The End.... Clicking on the checkmark would bring the player to Neighborhood View.

The Sims 4
The Sims 4 lets the player have two options after the last Sim dies. The player can save and continue to play with the world or return to the Main Menu without saving.