1. Create a simself and watch what he/she will evolve into.
2. Create two completely different sims (for example a super goody good sim and an evil one, or very clean and neat and an extremely messy one, or fat sim and healthy and fit sim) and make them live in the same house. Enable free mode and see what’s happening!
3. Invite all your enemies to a party and kill them all. There are dozens of methods: you can wait until they are all in the swimming pool and remove all the pool steps. Alternatively, you can buy a lot of rockets and wait until your guests felt the urge to play with them. When the rocket lands it starts a fire and kills everyone in the room. Don’t forget to remove the doors before the action starts.