Here Under Stars Far From Home

As for you, you don't remember how it all happened.  You were young then, and everything you heard and saw was a little beyond you, back then.  The end came in the middle of the night, when all was shapes and sounds in darkness, you bundled off and led away.  When you turned to look back, maybe you saw fires.  Since then, you've been a guest or a theif or a traveller, without a place to call your own, and the people you ask about back then, well, they don't want to talk, and maybe they didn't understand any better than you.  It's been 8 years, and you who were the older children, helping to shepherd the little ones, you're almost adults, and your home has been quiet and still and empty.  You have some friends.  You have some weapons.  You have some smarts and skills and secrets.  Your home is right there, where you left it, as a child, in the middle of the night.  Do you dare?

Foolish question, you wouldn't be here otherwise.

So tell me how things have been.  There are six statements that follow and three of them are true and three of them are false.  You get to decide which ones are which.  Everyone works together, dividing the authority to say or coming to a consensus as they please.

Most everyone died when your home fell.
Your people stayed in one more or less coherent group after.
Many of your people went... bad in the last days before.
Other communities have accepted some of you as their own.
Many of your people never stopped moving.
Your leaders approve of your mission to scout out your home.

You've gotten a chance to see your home from a distance, pick your way around the areas you know are dangerous.  Tell me what you have seen.  Again, three of these are true and three of them are false.  Again, everyone works together to decide which is which.

There is new construction in your home.
Your burying place is much expanded, with marks of funerary rites you've never seen.
The lake has flooded, and a lot of the low-lying parts of your home are under water.
The thoroughfares are blocked with detritus and creeping plants.
There's a giant sink-hole in the middle of your town and lights moving about below.
Animals and birds, even insects avoid the place.

Your home is full of monsters, traps and challenges.  This is their home, now.
Last, before we get to the parts that make the person you will be in this world, there is the reason.  In the ideal situation, these should be on cards, passed around, and each person should take the card corresponding to the reason they think drove them to this mission.  Otherwise, pick from a list, and cross it off.  No two came for the same reason.  The other parts, you needed to talk about those in order to choose.  This, you can, or you can not, as long as everyone knows not to double up on reasons.  It would not be bad to have a scene wherein you talk about your reasons for coming with the others (whether you tell the truth or not is up to you and says a thing), but you don't have to.  What you know and do not know about one another’s' reasons for being here is up to you.
You plan to stay, and set up an outpost to help reclaim the place.
You are in love and your love is interested in this aim, so you came to impress them.
You lost a thing that links you to the people you lost.  You know it's here and you want it back.
You have reasons to believe that someone you left behind when you fled is still here, somewhere, alive.
You want to gather wealth and treasures left behind, whether for your benefit or for that of others.
You've since become known as a coward or a fuckup and you want a chance to redeem yourself.
You were too too young and weak to go down fighting before.  You want your chance now.
You have this dream that draws you on.
You are done with this life and want to die, but do not wish to be found out as a suicide.
Someone is holding over you a threat or fate worse than anything you'll find in your former home.
You miss the place and want to see it one more time before you move on.

So yeah.  That's the beginning.