firstly, thanks for this great bundle with great games for a great cause.
that said, my main issues with the current setup are:
- that, unlike the library, the bundle download page isn't searchable
- and going on a game's "store page" (e.g. from the search) it does not show any hint as to me owning the game already (via the bundle), but instead asks me to buy either the bundle or the game, and doesn't even acknowledge the fact i already have it in the purchase dialog but happily lets me spend multiple times on the already owned game.
so while not flooding the library sounds like a good thing, it also prevents one from actually seeing they already own a game, unless they manually click through 25+ pages on the bundle download page. this pretty much forces (from a UX perspective) people to either run a spammy javascript a million times over, click loads of buttons by hand, or be "tricked" (not on purpose i assume) into buying the games multiple times over.
tl;dr: the "you already own this game" banner (which currently only shows up after a game is added to the library) should definitely check for "hidden" games owned via a bundle.
also, in the long term, please provide a "add this whole bundle to my library" button (or a setting in the account settings/etc) for people who don't mind their library being flooded, because I (and judging from the comments here also lots of others) would just rather like to have a big library they can easily search using the itch.io or 3rd party clients/APIs instead of the website hiding things from them for convenience. don't get me wrong, i totally understand why you didn't want to spam people (and presumably your database), but some do want that, even if just for the "ease of mind" of knowing the games won't accidentally vanish when the bundle ends (have seen that question a bunch), and of knowing they won't accidentally buy them multiple times, and also just the convenience of library searchability and knowing you don't have to hunt down owned items in bundles.