Good evening, folks!
I checked my laptop with Dr.Web today, and somehow it marked collection's .exe for separate download & save file as viruses Trojan.Inject1.62758. Here's a link for image just in case:

https://imgur.com/hpepHyI

Does anybody know whether it's false positive or something else? Played the collection a few months ago, haven't seen anything that may cause damage to my system.

Most probably false positive:
https://www.virustotal.com/gui/file/94580cdeeeeed2b36d27b022446cf8d49c2303157db6c200be5e73625f16a940
Dr. Web rarely have those but KCSCC v1.0CU has modified executable. May be this is a cause.

Ah, just as I expected. Thank you! I managed to return those files back from quarantine, the collection works fine as before.