What challenges do you play?

I got bored of the 100 baby challenge and started the Not So Berry. I created a founder family for the first generation. I chose Malcolm Landgraab as the spouse for my founder and their son Malcolm II is the first gen heir. The second gen heiress just aged to teen. Can't wait to continue!

I'm doing a legacy currently, although I'm not really following any rules for it. :D In other saves, I'm doing the Not So Berry challenge and the 100 Baby challenge. I get really into one save at a time and go between the others every once in a while. It's going to take me a longggg time to finish those! But that's part of why I like them.

I just started the trade off challenge it was just posted recently. I'm having a lot of fun with it... I'm already thinking ahead as to how I want to do it next time as I play it this time. It's doable for me... I usually end up using challenges as a guide for a story now and then when I'm not feeling very creative with my own play but don't make it past the first generation if it's generational or will follow my own rules for it.
Otherwise I've started or been kind of guided by rags to riches challenges, black widow challenges and homeless type challenges.

I did the Rainbow challenge once and that was fun, especially finding new dads for all the children.
Otherwise, I think I've only ever done a legacy once and rags to riches, which failed almost immediately when my Sim one 1 million simoleons on the lottery. :D

My favorite is just the original Legacy Challenge but usually with the 26generation Alphabetcy modifier. Its my favorite as it allows me to watch the genetics change (or not) over the generations.

I'm doing the SuperSim challenge atm. It's a fun way to explore the game actually. Normally I wouldn't make my sim complete aspirations and skills. It's overall a really cool challenge!