They all take me straight to the home page.

Thanks. I will update MaGog to ignore them, as they're all leftover obsolete ID.

Checked the four mixes you suggested:
1) "There is even a demo!": Looks good. I contacted gamefood to get his/her permission to reuse the information. Haven't heard from him/her yet.
2) "Gog games without manuals-where to find them": Would have been great if it concentrated on its implied title, namely "games with missing manuals and where to find them". Instead, as you said, it's mostly "games that never had a manual and where to find one of their many walkthroughs", which I consider less interesting.
3) As for both your mixes: While clearly inventive, I tend to consider them a bit too esoteric and I can't really see what benefit adding them to MaGog would bring beyond what is already available within the confines of the mix itself. The first one especially lends itself to the creation of 200+ equivalent mixes, one per country in the world, which would overwhelm MaGog.

Glad you liked my suggestions. Having the demo mix on the gogmixopedia will sure prove useful. As for the mix of games without manuals, unless its author can be contacted to change it, maybe a new one should be created by someone talking about games that had manuals that aren't included instead of games with no manuals in the 1st place (I might do it myself sometime, with the help of magog, if I find enough time...I'll see). As for my own mixes, glad you liked them as well -as for them being esoteric you probably mean specific and of interest only to a subset of people. Which means that the gogmixes in the gogmixopedia should mostly be ones with direct relevance and use to the wide majority of the userbase -that is, mixes with actually useful information, as in of use to pre-purchase/post-purchase decisions. This specification is also good to know - after all I guess nobody would like a gog version of Diderot's Encyclopedie or something indeed...
Anyways, thanks for taking a look at these mixes and in general for maintaining Magog and expanding its function! :-)

A slight update: I just made the mix "Games whose manuals aren't included-how to find them" ("whose" because it consiely secifies they had one on the 1st place-also, I know that "where to find" would fit more, but there's a character limit on the title)-it is a work in progress though, so I'll post the link here once it's finished...

ANNOUNCEMENT:
Version 6.4.4 has been released with the following features:

* Added an option to allow the user (you!) to determine which kind of algorithm to use for Scope (i.e. those checkboxes at the top): "greedy" (the one used until now and still the default) or "restrained" (a new one)
*** Note: The algorithm type determines what MaGog should do if a game has two scopes (e.g. DLC and Upcoming) and one scope checkbox is checked and the other is not.
*** Note: A greedy algorithm will include the game if at least one of its scopes is checked (e.g. either DLC or Upcoming in the example above).
*** Note: A restrained algorithm will include the game only if all its scopes are checked (e.g. both DLC and Upcoming in the example above).
*** Note: The greedy algorithm will by definition always find the same results as the restrained one or more, never less, which makes it a safer choice (and the default).
*** Note: If you couldn't care less or all this is really too much for you, just leave it as "greedy" and forget all about it.
*** Note: But if some day you find yourself saying to your significant other "but I didn't want this scope in my search", remember that the "restrained" option is avialable.

Here's the alpha/beta version of my new gogmix http://www.gog.com/mix/games_whose_manuals_arent_includedhow_to_find_them -it isn't finished yet evidently, but I found many links for manuals already (not to mention that if gog can release an alpha/beta version to the public, why can't I ? :P)
You'll notice a few things:
-My main new contribution is the links for manuals for games released this year of 2015 -that other gogmix hadn't been updated with those, and many classic games weren't released with manuals (or with any bonuses for that matter)-more than I thought...
-You'll also notice that a couple of manual links point at "abandonware" sites. So, before some people overreact, I used those when I couldn't find said manuals from anywhere else, or when the extras offered are what one would expect from gog to offer (e.g. For Mortal Kombat 1-2 Abandonia offers Manual, Moves list and Comic book!). Not to mention that in the case of MK 1-2 Abandonia has removed the download link for the game itself and now points to the gog page for purchase. Myabandonware. com (for the manual of cannon fodder 2) was a harder case, as it's more prone to someone overreacting (because it hasn' t removed its download link), hence I pointed directly to the manual.
-Many entries are still blank. That's because I haven't found links for manuals yet (at least not for the pc version of them-wonder if I'm allowed to post console versions in case pc versions aren't found) and for some no digitized manual exists, so I'll remove them sooner or later.

Anyways, why I'm posting this -guess I'd like some help/confirmation (e.g. is Cyberia's manual indeed right in its game directory? and can one find Megarace 1's manual in its directory as well?). Hopefully, my work will be satisfying enough....

edit-another thing you might notice-a shitload of manuals are available on steam but not here. That's one "treating gog customers as 2nd class" example right there!

I see you aren't including games without known digitized manuals. Would it be possible to create a couple more mixes (games that didn't have manuals) and (games that did have manuals but there isn't a known digital one) ? That would create a fairly definitive set of lists and maybe people could contribute missing manuals.

Well, that could be an idea to apply if I had more time in my hands (even for this beta version you're seeing it took me most of yesterday's afternoon and today's morning-most time of which was spent certifying that certain games indeed didn't have a manual anywhere).
Regarding games that didn't have manuals, you mean that no manuals were ever created for them, right? In order to see those, you can always search in Magog for "Bonuses" "is none of" "manuals" and assume that the vast majority of indie games do not have manuals made for them (not to mention the original gogmix that is no longer useful mentions quite a lot from this kind too) -there are also some indies that do have manuals, most of which are included in my gogmix at this point.
Regarding now games whose manuals cannot be found digitally, that question is more complicated. For example, there are quite a lot of games for which I couldn't find a DOS/PC manual, but found a manual for another platform (e.g. Atari Jaguar for Theme Park and Amiga for Prehistorik 1+2) -I didn't include these however because differences are bound to exist. Plus, there are also the select few games that don't have a manual uploaded at all -an example is Afterlife, the 1st post placeholder. From my research I found that the manual for this game could be considered "dinky" (quoting from one of the sites I saw) at best (and maybe it's the one gog calls "quickstart"), and LucasArts did it this way to "force" people to buy the strategy guide -which strategy guide cannot be found digitally!
As for contributing manuals, well, gog can't be really trusted to add these to the extras e.g. regarding Nosferatu, a french guy claimed he had the french manual yet nothing happened regarding inserting that one at least in the extras and regarding Cyberia, even though the manual is right there in the game's directory, it hasn't been also added to the extras.
tl;dr Making another 2 gogmixes for games that do not have manuals would wildly complicate things, and the manuals situation, as I found out, is already complicated enough as it is...

Right.

Looks good!
I will schedule to add this into MaGog, hopefully sometime this weekend. Your position in the queue is #3.

One favour: If you have dummy entries (e.g. Afterlife), please indicate that it is one in a consistent way (e.g. "[Dummy Entry]"), so MaGog will know to ignore it.

Thank you!

Glad you liked it ! I'll probably have the gogmix stabilised till the weekend hopefully... I added the [Dummy Entry] tag on Afterlife (also when I mentioned blank entries, there were indeed some but I removed them in the meanwhile, since I couldn't find a manual for them no matter how much I searched).
So, you're welcome! :-)
P.S. Btw, your new Christmas avatar look pretty nice -even though I was so used to your old one, that when I saw your reply I was for a few seconds like "Who's that random person that just replied to me?" and then was like "Ah, mrkgnao in a Xmas avatar..."

An image for stef_andre to show how to filter unbundled games.

ANNOUNCEMENT:
Version 6.5.0 has been released with the following features:

* Added display of current and past "Bundle Pricing" information, namely extra discount if bought with other games, as well as basic filtering for it (under "Price" and "Past Sale") [clever solution suggested by grimwerk]
* Added fronzelneekburm's "Games that treat GOG customers as second class citizens" GOG mix to the Gogmixopedia display and filter
* Added Treasure's "Games whose manuals aren't included-how to find them" GOG mix to the Gogmixopedia display and filter
* Added gamefood's "There is even a Demo!" GOG mix to the Gogmixopedia display and filter
*** Note: Even though gamefood no longer maintains this GOG mix, I feel that what's there is still valuable and I currently know of no better alternative source.
* Added "papercraft(s)" and "paper toy(s)" to the list of searchable bonuses

The stats and history of discounts are interesting. But is it possible to separate discounted bundles from single discounts? A clarification.