I haven't encountered a single Retro Gastly/Haunter/Gengar the past
two days; unlike last year, where I'd find at least 2-4 a day. I've
seen a few other people mention this as well.
Yesterday, I did most of my Trick-or-Treats at level 4, and the
rest at level 5. Today, I did most at level 6, and three at level
7. (I have all the upgrades). No encounters.
I'm not sure if this is a bug, or intentional, but either way, the
current encounter rate is far too low.
EDIT: I've seen multiple people at ToT Level 3 or less with 2-3
encounters a day. It seems that encounter rates are higher at lower
levels.
EDIT 25/10: All trick-or-treats done at level 8, no encounters
EDIT 26/10: All trick-or-treats done at level 9, 1 Retro Gengar
encounter
EDIT 27/10: All trick-or-treats done at level 9, no encounters
EDIT 28/10: All trick-or-treats done at level 9, 1 Retro Gengar
encounter
EDIT 29/10: Most trick-or-treats done at level 9, 2 Retro Gastly
encounter, 3 trick-or-treats done at level 10, 1 Retro Gastly
encounter
EDIT 30/10: All trick-or-treats done at level 10, 1 Retro Gastly
and 2 Retro Haunter encounters
EDIT 31/10: All trick-or-treats done at level 10, 1 Retro Gastly
and 1 Retro Gengar encounter
EDIT 02/11: All ToTs at level 10, 3 encounters today and 2
yesterday
I’m at level six, and I’ve done the max amount of trick or treating
every day, but I’ve only encountered one retro in all that time
(which escaped, of course).
I dont want to ruin your mood, but I am level 4 and have T&T on
3 days for now, and encountered 2 Retro Gastly. I think it's just
bad luck and not a bug. Like the Galar rumble, where I would get 3
feathers in 1 week, and then nothing for 2 months.