A couple of points to consider here. Firstly any Harry Potter games were licensed and the licenses have likely expired now so unless those licenses are renewed the only legitimate option will be physical copies. Secondly the movie tie-ins were published by EA so even if they were relicensed/rereleasing we almost certainly wouldn't see them in
Harry Potter and the Chamber of Secrets for PC glitch. I used to play this game a lot over a decade ago on my family's computer via the disk. There is no easy way to play it nowadays, so this possible glitch may just be lost to time. Occasionally, when I would boot up the game to continue my playthrough, instead of appearing where I last left
A 100% completed savefile for the 2nd Harry Potter game (Harry Potter and the Chamber of Secrets) for the PC. All you have to do is extract this archive in your "My Documents" folder (and not in the location where you installed your game). HGpGg.