Well, it turn out it really was a tiny selection of games.

Seen a few complaints about this and it also seemed to me that there were a lot of repeats. Turns out there are 10 games that have cycled through as a repeat:

Deus Ex (2)
Deus Ex 2: Invisible War (3)
Planet Nomads (2)
This War of Mine (2)
Shadowrun: Hongkong - Extended Edition (3)
Darkwood (2)
Stalker - Shadow of Chernobyl (2)
Bubsy: The Woolies Strike Back (2)
Homeworld Remastered Collection (2)
Kathy Rain (2)

So this breaks down like so: 57 deals so far. 10 titles repeated (2 of them tripled). If you don't count the first appearance of the game (since that's the unique entry for it), 12 of 57 offered flash deals are repeats, which is about 22%.

Seems kind of high, but I guess it's reasonable to assume there will be repeats (and it's likely intentional to allow some of GOG's customers to grab deals they may have missed). I think it exacerbates this feeling of the same games cycling over and over since they're up for 6 hour stretches. So you really feel like you're looking at the same games all the time.

I think what really made this look so bad is the fact sale FAQ says the flash deals will be "gone forever" with very few exceptions, and then the repeats started on the very day the sale launched, and pretty much all the time there seems to be at least one repeat up. And we're only two days in with five more to go. I think most people expected the repeats to start near the end.

So yeah, the numbers are not that bad (not that good either), it's just all rather poorly thought out and looks bad.

In past sales you had a much higher selection of games, and it would take as much as a week for a game to repeat. All of those repeats you listed are at the very beginning of this sale.

This flash sale seems kind of pointless. What percentage of games are included in this sale, one percent? That means it is highly likely the sale will not even include a game that you want, but they think you are going to watch a flash sale hour after hour? Then even if something does come up that you want, the discount may be tiny, especially for a flash sale.

Yep, and I'm surprised at how fast we saw repeats as well. Don't get me wrong: I'm not saying it's a good sale. I was just curious about the numbers since I'd seen a few complaints about the sale and it also seemed to me that the turnover of new games was damned slow. Then tossing in repeats so quickly also seemed to make it worse. So I just thought the numbers were interesting. Not as many repeats as it seems, but too soon and they sit there too long for the sale to even generate any excitement.

I didn't see when the flash sales started, but I imagine that the first batch had a game up for 1 hr, a game up for 2 hrs, a game up for 3 hrs, etc. so they could set up the 8 hr sale rotation. I imagine that the end of the sale is probably going to spin down in a similar fashion, where the last few games are up for increasingly short amounts of time.

With that in mind, are some of these repeats games from that first batch with a shorter timer? I know that not all of them are, but that might explain some of the repeats. Otherwise you get threads with people going "I missed that game because it was only up for 1/2/3/x hours at the very start, and I didn't know a sale was starting!"

I retract my earlier theory. There are way too many repeats for it to be incidental.

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Repeats.
While I was not in favour of flash deals, at least, I thought, there will be a large number of games in the pool.
The pool for flash deal now seems rather limited.
And the FAQ made it seem like deals once removed from flash deals were mostly gone.

I'm ok with some repeats as it helps those who missed the game the first time.