[lv0] The game I want to give away isn't listed in SG. What can be done about it?

in general:

• not an error, giveaways are disabled, it's usually for "bundles" (that usually lead to problems like already owned dlc's and not correctly detected by SG, many rerolls..)

• it refers add a game which isn't in the list (of all games which you can create a GA) like an old "removed from Steam" game

• it's usually useless to write Support as this has been done by Support itself :D

a tip: do always search here in Discussions. Lilly usually adds this info (which giveaways you could create for that "sub". also, you usually lose CV in the process as GA won't be for the "full bundle, sub")

hope it helps

edit: i do usually use tons of "usually". not always, tho... usually.

One option in this scenario is to simply make a giveaway under the base game, with a note that says something like "this should be the gold pack." The extra DLC is essentially just a bonus for the giveaway winner.

This option gives a bit less CV, so if that's important to you, this won't be your favorite plan. (And in this case, the base game gives zero CV, so this plan really doesn't work if you care about CV!)

One positive effect of doing the giveaway for the base game is that the base game is an app, so you won't have to worry about re-rolls (because the API can detect app ownership). Whereas if you do the giveaway for a sub, people who own everything can still enter -- the API can't detect sub ownership -- so re-rolls become much more likely.

SG's support provides an "Add Game to List" category, which is quite ambiguous to me. Is it referring to adding missing games to SG's listings, as is needed in my situation? Or does it mean add an existing game to a different CV list, e.g. from Full Value to Reduced Value?

Yes, it gets used for requests to add games, if you can't pick them on the sg listing.
AND it gets used for tickets about games that aren't listed with the correct cv (some active mods wanted it this way because the "Other" category was nearly never checked and a complete chaos) = full cv but was bundled/free in the past, reduced cv but was free in the past.

I think it's the difference between a 'package' sub and 'bundle' (has 'bundle' rather than 'sub' in the Steam url) on Steam. You can giveaway the former but not the latter - I think it's a limitation with the Steam API (i.e. bundle contents depend on what you already own). You will get no help from support asking them to add a bundle.

You mention 'batman trilogy' well both Batman: Arkham Collection and LEGO Batman Trilogy are packages and can be given away on SG. Your example of Starpoint Gemini Warlords Gold Pack is a 'complete the set' bundle, and cannot be given away or added to SG.