You can filter games out with keywords in uBlock Origin.
You just need to be careful with the keywords.
For instance, I use the following, either because I own them in another version or because they are not suitable for me, or I simply don't like them.
gog.com##product-tile:has(.product-tile__title[title="Whale Rock All Games Bundle"])
gog.com##product-tile:has(.product-tile__title[title="Whale Rock Games - Immersive Puzzles Bundle"])
gog.com##product-tile:has(.product-tile__title[title="LEGO® DC Super-Villains Season Pass"])
gog.com##product-tile:has(.product-tile__title[title="Kingdom Come: Deliverance - HD Voice Pack - French"])
gog.com##product-tile:has(.product-tile__title[title="Kingdom Come: Deliverance - HD Voice Pack - German"])
gog.com##product-tile:has(.product-tile__title[title="Neverwinter Nights: Enhanced Edition - French Extras"])
gog.com##product-tile:has(.product-tile__title[title="Neverwinter Nights: Enhanced Edition - German Extras"])
gog.com##product-tile:has(.product-tile__title[title="Neverwinter Nights: Enhanced Edition - Italian Extras"])
gog.com##product-tile:has(.product-tile__title[title="Neverwinter Nights: Enhanced Edition - Polish Extras"])
gog.com##product-tile:has(.product-tile__title[title="Neverwinter Nights: Enhanced Edition - Spanish Extras"])
gog.com##product-tile:has(.product-tile__title[title="The Witcher 3: Wild Hunt"])
gog.com##product-tile:has(.product-tile__title[title="The Witcher 3: Wild Hunt - Expansion Pass"])
gog.com##product-tile:has(.product-tile__title[title="The Witcher 3: Wild Hunt - Blood and Wine"])
gog.com##product-tile:has(.product-tile__title[title="The Witcher 3: Wild Hunt - Hearts of Stone"])