Zipper, I got 30 donuts shooting a UFO down in your town today! woo hoo!
I’m don’t have UBO yet, but I should get it tomorrow, Monday at the latest, so xamovo will be a gremalien-safe town when I do. I’ve been making walls with my stuff like crazy. I’ve probably made at least 20, plus I’ve won a ton. It’s nice to see my bonus just go up and up. I am still going to drop of eggs and send kids trick or treating after I get UBO because there are just too many opportunities for donuts and walls.
I got the UBO last night, so my town is a save haven for grem-aliens.
Yay! Glad to be a donut-giver!
I haven’t gotten any more 30-donut prizes since I got those two. But I’ve made it up to 120 donuts by getting a few here and there so that’s pretty cool.
I need 1700 strands in the next 1 day and 10 hours so if anyone feels like pelting my town with gremaliens, please do! 
I didn’t realize spooky walls had any value. I will start building them anon!
I’m getting close as well. As of this afternoon, I need 1435 for the UBO.
I got my UBO and I now declare a Gremalien sanctuary in my Springfield. If you’re still working towards your final prize, feel free to put your gremaliens here and I promise that I’ll try not to tap them. OK, I promise that I’ll try to try.
Jsteck13
No word of an extension. I am assuming it ends at the original stated time.
Gee, and I was only 3300 strings away, too…
Even if there isn’t an extension, if the take-down requires a store update, you can try to put it off until it forces you.
All right I’ve got my UBO! ZipperJJTown is closed for Gremalien season!
Few hundred more. Hope they give it one more day.
And it is over. Still have little buggers running around, but doesn’t count for UBO, nor is it in the craft list. Guess i should make walls. 350 short.
Yep I missed it.
I assume it has ended. This will be the first time no event is running since the end of August. I could use a break from events for a few weeks before Christmas begins.
It was still going for me when I woke up so I put all the kids on another round of trick or treating. I assume it will be done when I get on next. I could use the break as well. I’ve been ducking out of work every afternoon around 2:00 to get treat bags and send kids back out again.
I managed to get the UBO with about 12 hours to spare. It’ll be nice not having all those suckers running around town anymore.
I was not able to geet UBO. 
Oh well.
Me neither. But I was able to get the queen with my last few bags.
So this morning I was still able to collect bags and tap aliens and then send the kids back out trick or treating. So does it just end on it’s own or is there something I have to do?
Beneficial glitch report!
After updating to end the Halloween event, you get $75 and 7 XP every 3 hours from your Spooky Houses, Pumpkin Houses, and Rigellian Tribal Huts.
But… … the timer runs out every time you refresh your Springfield (open the game or return from other Springfields), so you can make some quick cash by closing and opening the game and collecting, lather-rinse-repeat. However, my Spooky House stopped paying out after I briefly stored it in inventory to arrange all my glitch houses together, so to take full advantage of the glitch DON’T put them into inventory!
I’m playing on an iPhone. The Halloween event didn’t end until I updated the version in the App Store.
ETA: I was still able to collect treat bags and craft items, but apparently the UBO is not available after the event time ran out.