The agreement will see an initial slate of games being offered, with further games added down the line. The first selection of games will include: Time is Money, 8th Wonder, Sunrise Reels, Sunset Reels, and Symmetry, with Realistic Roulette being the next game to come.
Commenting on the launch a bet365 rep said, "We're delighted to be entering the market in tandem with Realistic and are excited by the opportunities that it presents us both.
"Their games are proven performers around the world and we're anticipating that they will be well-received in Denmark too."
Realistic Games Commercial Director Robert Lee added: "bet365 continues to be a key operating partner for Realistic and I'm very pleased that we have been able to launch into Denmark together.
"Increasing our presence in regulated markets is very much part of our strategy moving forward, so we are delighted that our first tranche of games is now live.
"We're looking forward to releasing a number of other games in our portfolio and we're confident they'll be enjoyed by bet365's Danish players just as much as they are elsewhere."