More Scenarios will be added in the future, on top of the five that launched this week, some of which EA say will only be available for a limited time. The challenges will have some possible solutions listed in the main menu, but there will also be other ways to win that aren't listed. Scenarios currently require you to create a new family, though EA say in the future you'll be able to use an existing family. You could undertake the Too Many Toddlers scenario with a sim who has the Hates Children trait, if you want to create a hard mode run. Players create a Sim character and control their life to explore different personalities which change the way the game. The everyday life simulator is back for the fourth instalment The Sims 4 is full of improvements and new solutions to make your Sims even more relatable.
Since you're in charge of creating the Sim or family that will undertake it, you should have a lot of leeway to tune the difficulty with your own weird ideas. It's particularly fun that Scenarios prescribe win conditions but leave the starting point up to interpretation. Study our list of Sims 4 cheats to learn some serious life hacks and check out our list of best Sims 4 expansions to figure out which DLCs are worth digging into.