Wizards of the Coast
Wizards of the Coast was founded back in 1990, and in a short span of five years, their first game Magic: The Gathering has hit one billion cards sold. Thereafter, they bought over a few game publishers and were acquired by Hasbro.
Through the years, they have steadily grown and published many game series and expansion packs to cater to the demand. Some of their popular games include the famous Duel Masters trading card game back in 2002 and the Lords of Waterdeep: Scoundrels of Skullport as part of the Dungeons and Dragons series.