On last reboost, the iOS app version of Lost Treasures of Infocom:
https://archive.org/details/lost-treasures-of-infocom-ios
The game files are all the usual versions, as far as I know. (I'll check in detail, but they should match the contents of https://archive.org/details/InfocomClassicTextAdventureMasterpieces1996JewelCaseArt .)
The nice part here is the game feelies, maps, and hint files. These are *also* derived from the 1996 CD but may have been updated or reformatted.
In case it's not clear, you can download the app store package (.ipa) and rename it to "app.zip" to unpack. Or view here: https://ia601609.us.archive.org/view_archive.php?archive=/14/items/lost-treasures-of-infocom-ios/Lost%20Treasures%20of%20Infocom.ipa
(IF fans all know this, but maybe not everybody else following this thread:)
You can go to the above archive.org link, or https://archive.org/details/InfocomClassicTextAdventureMasterpieces1996JewelCaseArt , and pull the Infocom game files out of the package.
Most of them can then be played with an open-source interpreter like https://github.com/erkyrath/lectrote/releases or https://github.com/garglk/garglk/releases .
(The later graphical games like Zork Zero are trickier; they require a different interpreter. Try WinFrotz.)
Also, https://ifdb.org has links to the game files in web-playable form.
Finally, I have a page https://eblong.com/infocom/ which links to every known version of these game files. Not just the ones that appeared in the "final" Activision compendiums!
Also the source code directories (which have been available on github since 2019).
This page includes plenty of in-development and beta versions, so watch out for bugs.
Finally finally: I know Activision's possible acquisition is back in the news.
Hey, if you're a Microsoft IP lawyer and you're about to acquire a big pile of Infocom rights that are doing nothing but selling a few copies a month on Steam/GOG...
Wouldn't it be a great gesture to transfer those rights to a legit non-profit which is devoted to preserving IF history? Then we could stop waffling about who's allowed to do what.
I merely mention the idea. :phone-gesture: Call me, pal.