Asbeau: You don't
really think that the games in this promo will sell more or attract more people to GOG than a horror-themed pack of discounted GOG classics would, do you?
I can't tell. It's not impossible, but I don't have access to the data that would be required to even make an educated guess. I was, however, mainly talking about GOG's recent tendency of bucking the trend in general, not about the games in this promo specifically.
Generally, the market situation is like this:
Steam, which controls about 80% of the market, puts lots of scary games on sale for prices that GOG can't (or doesn't want to) compete with. Several other shops follow suit. At this point, for GOG, doing their own promo of similar games would appeal to a very small segment of the market, namely people who are specifically interested in the older or Indie titles that GOG's catalog consists of. All other potential customers will find Steam's offers (newer games for less money) more appealing.
In short: GOG has neither the catalog nor the financial power to compete with Steam on whichever turf Steam has currently chosen. Therefore, bucking the trend seems a viable alternative.
Whether or not this succeeds, will hinge on details that we don't know. We don't know how many of GOG's customers have already bought the scary games in the catalog. We don't know how many customers are interested in the "cute" games in the current promo. We don't know how many new customers have been driven to GOG by the recent two bundle sales, and what their preferences are. GOG has this data, or at least can extrapolate it from users' wishlists.
Nevertheless, I maintain that the general notion of bucking trends that other shops are following, seems very viable for GOG, considering the current structure of the market.
Qwertyman: A point to consider though, is that most of the 'scary' games GoG sells are games not available on other sites, so they still would have been in a unique position for sales since this is the only place to get said games.
Yes. The question is if GOG would really benefit from putting these games on sale at a time when everyone else is offering games that are similar, newer, and cheaper.