Here a couple examples I came across recently of games which have multiple recent reviews, on the first page of reviews, that either outright state they received a counterfeit or describe quality control issues that almost certainly describe a counterfeit:

Catan https://smile.amazon.com/Catan-Studios-cantan2017/dp/B00U26V...

Splendor https://smile.amazon.com/Asmodee-SPL01-Splendor/dp/B00IZEUFI...

Ticket to Ride https://smile.amazon.com/Days-Wonder-DO7201-Ticket-Ride/dp/0...

Ticket to Ride: Europe https://smile.amazon.com/dp/B000809OAO/

7 Wonders https://smile.amazon.com/Asmodee-5511788-7-Wonders/dp/B0043K...

Azul https://smile.amazon.com/Plan-Games-Azul-Board-Game/dp/B077M...

They're not hard to find -- popular games from smaller publishers with high prices but relatively simple (cardboard/plastic) components seem to be what counterfeiters target.