Malta-based slot developer Pragmatic Play will provide its full portfolio of games to William Hill, with Mighty Kong the first title to go live with the operator.
This will be followed by Pragmatic's other popular titles such as Wolf Gold, Jurassic Giants and Pixie Wings, which are being made available to William Hill via Microgaming's Quickfire open platform.
"Pragmatic Play's diverse titles all offer entertaining and innovative gameplay, and partnering with them opens up great new opportunities to build on our leading online casino offering," William Hill commercial director Graeme Powrie said.
"This is a hugely exciting partnership, and we look forward to enjoying a long and rewarding relationship with this fast-growing provider."
Pragmatic Play chief business development officer Yossi Barzely added: "William Hill's standing in the industry needs no introduction, and we are thrilled to be able to offer our content to their players for the first time.
"Their longevity and reputation for providing players with best-in-class gaming experiences makes William Hill an ideal partner with whom to integrate our growing collection of top performing games."