The site also has plans to introduce a number of paid-for games, which will be added shortly. These games can be paid for by credit card and also by winning tokens from the free games on offer.
The site is divided into a number of different channels including gaming, competitions, games and betting. The site will also feature news, tips and exclusive offers from the site's editorial team.
The site will initially be launched to 365 Corp's database of users of its other sites. Users will be able to win up to £2m each week.
Richard Pembroke, managing director of 365's internet division, said, "The unique Win365 product offering gives us a lead over our gaming competition and provides major syndication opportunities and further enhances this revenue."
Shares in 365 Corp climbed 1.8% yesterday to 14p in London on the news.