User blog comment:Lost Labyrinth/The Sims Wiki News - 19th December 2013/@comment-5850877-20131219221441/@comment-1997588-20131226042007

Challenges are some sort of with certain rules and restrictions set so you don't only play Sims as a linear simulation game. There are many kinds of TS3 challenges in the forums (not this forum, though). For example, there are some "survival" challenges where you're forbidden to leave your house and can only earn money from home. There's also 100 babies challenge, where you have to raise 100 babies in as few generations as possible.

I found challenges are fun and challenging especially when you're kind of bored with playing the game linearly. That's why I suggest you that.

If you want more from EA, you'll have to wait. That's all I can say.