Top Tips for Betting and Gaming Advertisers
This relates to the UK gambling market specifically but I'd suggest it's a good article for any country you're marketing to. It's some top tips for betting and gaming advertisers, released by the Committee of Advertising Practice in the UK who are responsible for ensuring that the UK advertising codes are adhered to.
Some of the links in the article are interesting and show where others have been tripped up.
https://www.cap.org.uk/News-reports/...vertisers.aspx