During the final days, the Sim will be haunted by a dark haze and eventually a mummy head. If steps aren't taken to cure the curse, the Sim will die within a couple of weeks. The Curse of a Mummy A special edition in the World Adventures expansion pack, mummies can curse Sims by breathing putrid-looking smoke on them. You're given plenty of warning that a meteor is on the way, but if you want to watch your Sims die, leave them where they are. Then they just have to stand in a relatively open area.

Meteor Strike If you have the Ambitions expansion pack for The Sims 3, you can set your Sims up to be crushed by a meteor (which can also start a fire by the way.) Sims who use the telescope frequently have the best chance of being a meteor target. Leaving items too close to a fireplace, cooking on a cheap stove with no cooking skill, botching a science experiment, and even candles on a birthday cake can cause virtual houses to go up in flames. Fire There are multiple ways to set things on fire in The Sims 3, which can result in death if the Sim has no way to escape the area. If you can manage to give them another jolt while that moodlet is active, they'll die. After the first shock, they'll receive the 'singed' moodlet. YES NO Electrocution Another one that's been available in all of the games, you can electrocute your Sims by having them attempt to repair an electronic device with a low 'handiness' skill.