it regularly goes on sale - almost guaranteed during the summer and winter sales, but usually at least 4 times a year.
additionally if you have hardcopies (or own it on another service), you can try the cd keys here:
https://www.gog.com/reclaim
no guarantee they'll be in the database though.

The STALKER series was discounted the previous month and has been getting discounts roughly every 2-3 months. While I would bet on the summer sale (June-July) as a very probable period, you can also wishlist the games and enable wishlist alerts, so that you will be warned via e-mail if the games happen to go on sale earlier.

Thanks for the Replies guys. I guess i missed last months sale. I have also got them on my wishlist so i can't wait to play them again.

While I wait I shall play Fallout 3 and Fallout New Vegas :D

Send me private message.

They are on sale now, get em here https://www.gog.com/promo/20200424_weekend_sale

Well that didn't take long! Enjoy the games OP!

I can remember hearing about Shadow of Chernobyl when I was in my console slumming days - when I finally got to play it (thanks GoG!) it was an absolute blast. Massive, real open world that I slowly scavanged my way across. It just felt so "lived in" - a lot of games that purport to having you slowly venture out, plan and survive don't even come close to what this game accomplished in terms of feel.

I haven't played Clear Sky yet, and I thought Pripyat was just a much "smaller" game with a less interesting story. It was nice in a "more of the same" sort of way but it just wasn't as gripping as my first go with SoC.