Under the agreement, which will run for a period of 10 years, Sisal will manage and develop a product portfolio that will include sports betting, numerical games, instant lotteries and online games.
Games will be distributed across a network of retail outlets and online throughout Tunisia.
Promosport operates in the country as the sports betting administration of the Ministry of Youth and Sports.
“Winning the contract is very satisfying, as this tender has attracted the attention of the most important international players, with whom we have been competing in the various phases,” Sisal’s international managing director Marco Caccavale said.
“The victory in Tunisia is strategic for us because it completes our growth path in an important area with considerable prospects for development in the future, and at the same time certifies the leadership and know-how of Sisal at an international level.”
The tender win comes after Flutter completed its acquisition of Sisal last month, in a deal worth €1.91bn (£1.71bn/$1.85bn).
Flutter said that the purchase formed part of its strategy of investing to build leadership positions in regulated markets around the world.
Sisal is also the licensee for the Italian national lottery, as well as those of Morocco and Turkey, the last of these being run through a joint venture with local business Demirören Holding.
The business was also in the running for the UK’s fourth National Lottery licence, but lost out to Allwyn.