Just trying to spare you greater disappointment. ;-D
We can't exclude the case of new games coming up as Flash Deals - given that the repeats started after 114 titles and with the Sale being of almost equal duration with the Summer one which had a total of 221 unique Flash Deals, it's possible that in a week's time these 114 titles will be replaced by or mixed up with a fresh batch.

I think that the multiple repeats serve to give people on each timezone a few chances to get their games. Take for instance this Sale and two of the titles that made two appearances so far:

Disciples: Sacred Lands Gold (Ends Wed, 12 Nov 2014 21:58:59 UTC)
Disciples: Sacred Lands Gold (Ends Sun, 16 Nov 2014 05:58:59 UTC)

Sacred Gold (Ends Thu, 13 Nov 2014 06:38:59 UTC)
Sacred Gold (Ends Sat, 15 Nov 2014 22:38:59 UTC)

One shouldn't and wouldn't normally catch them all. But if one follows the Sale very closely and spends significant amounts on here, it gets quite boring and feels overkill.

There's a big difference this time though - during the Summer Sale the Flash Deals went live in pairs with a duration of 36' for the most part and with the next batch being greyed out, and the pattern was changes a few times by putting up batches of six games (same duration). This time a total of eight games are live at the same time but for a varying duration, while only the very next title to go live is revealed. I expect GOG to refresh things, but honestly can't think how they'd go about it.

I could be remembering wrong, but weren't several batches active at the same time back then, too? I seem to recall five as the number, so 10 games at low speed and 30 at high.

oops! I've been missing out on the stamps!

I've been here since day 1, but never actually 'clicked'. I'm interested in "The Gamers - Director's Cut" but don't actually want "The Witcher 2". I know, I know; thats like being on Steam and not wanting Half-Life 2 (or Portal 2 or L4D2), but there it is. Still, you are correct, it is not entirely impossible that they won't change the offer at some point to a bundle I would want.

Stamp 1 collected.

Now, collect five more and then wait...

Its a long sale..i certainly hope they keep things fresh......

They can freshen up the list after I grab everything I want from it. (Selfish moment, I know.)

Additional -

DAY FOUR

Flash Deals

Space Colony HD $2.49 ($9.99) (75%)
Strike Suit Zero: Director's Cut $3.99 ($19.99) (80%)
Oddworld: Abe's Oddysee $1.49 ($5.99) (75%)
Redshirt $1.99 ($9.99) (80%)
Sacred Gold $1.99 ($9.99) (80%)
Race Driver: GRID $2.99 ($14.99) (80%)
Jagged Alliance 2 $1.99 ($9.99) (80%)
Lilly Looking Through $1.99 ($9.99) (80%)
Shelter $1.99 ($9.99) (80%)
Swapper, The $2.99 ($14.99) (80%)
Sanitarium $1.99 ($9.99) (80%)
To The Moon $1.99 ($9.99) (80%)
Evoland $1.99 ($9.99) (80%)
Witcher 2: Assassins Of Kings, The $2.99 ($19.99)([85%)
BlazBlue Calamity Trigger $3.39 ($9.99) (66%)
Disciples: Sacred Lands Gold $1.49 ($5.99) (75%)
A Golden Wake $9.99 ($14.99) (33%)
Super Time Force Ultra $9.99 ($14.99) (33%)
1849 - $4.49 (14.99 - 70%)
Samaritan Paradox - $.2.99 ($9.99 - 70%)
The Longest Journey - $1.99 ($9.99 - 80%)
Medal of Honor: Allied Assault War Chest - $2.49 ($9.99 - 75%)
Inquisitor - $2.29 ($14.99 - 85%)
Botanicula - $1.99 ($9.99 - 80%)
Two Worlds - $1.99 ($9.99 - 80%)
American Conquest + Fight Back - $1.19 ($5.99 - 80%)
Meridian: New World - $5.99 ($14.99 - 60%)
Papers, Please - $2.99 ($9.99 - 70%)
Bad Mojo Redux - $1.19 ($5.99 - 80%)
Leisure Suit Larry: Reloaded - $3.99 ($19.99 - 80%)
Bard's Tale - $1.99 ($9.99 - 80%)

Thank you to HypersomniacLive for continuing list maintenance in Sinistar's absence.

Given that all today's flash sale games came from Day 1, here is the list of Day 1 games yet to appear twice...
Bad Mojo Redux
Bard's Tale, The
Beatbuddy: Tale of the Guardians
Chaos Engine, The
Deus Ex™ GOTY Edition
Fez
Hammerwatch
Jade Empire: Special Edition
Leisure Suit Larry: Reloaded
Mark of the Ninja Special Edition
Master of Magic
Meridian: New World
Omikron: The Nomad Soul
Papers, Please
Rise of the Triad (2013)
Rogue Legacy
Shadowrun: Dragonfall - Director's Cut
Stronghold HD

Thank you for the info. Looks like I missed a chunk of my list on the repeat, and I've got 2 of 18 on my list that haven't appeared yet. Joy.

No clue, honestly. I've been writing down what comes along, but haven't really been analyzing the data looking for the underlying pattern.

First Day 2 repeat, Two Worlds, the pattern has been broken...

Now up: Two Worlds - 80% off - $1.99

Next up: American Conquest + Fight Back

Looks like we've got a first-timer showing up!

Dang, I've been watching this sale regularly and have yet to see the one game I actually want show up again (FEZ). I seem to miss it every time it goes on sale! As much as I faithfully check the new deals, half of the games I've never even heard of... :D

New game on Flash!!!!! American Conquest + Fight Back

I might buy this one if its 80%...

I think there is definitely going to be a second round of flash sales. Probably starting on Day 7.

My reasoning is that the entire sale lasts 14 days (assuming it runs until the end of Nov 25th). We had three days of non-repeated flash sale games. If they repeat for three days, then that would leave us ready for another (new) batch of flash sales to appear over three days and then repeat over three more days.

Then perhaps GOG has something extra-special planned for us for the two-day finale?...

ETA: ^^^ I could be wrong LOL :D!

At least we had blocks of repeats, means we may see some pattern to it. Last one seemed so random.