Avis Budget Group Inc. is celebrating the 20th anniversary of Unlimited Rewards, its loyalty program for travel professionals.

Since its creation in 1997 as the first rental car program designed specifically for travel agents, Unlimited Rewards has nearly 20 travel brands through which rewards can be earned.

In honor of the milestone, Avis Budget has launched a sweepstakes and instant win game for Unlimited Rewards members.

Through Sept. 10, travel professionals who book their clients with Avis Car Rental, Budget Car Rental, Hilton hotel brands as well as Carey and Embarque will be entered to win daily prizes and the grand prize.

Daily prizes, which total more than 600 prizes throughout the course of the sweepstakes and instant win game, include dollar rewards and Hilton hotel stays. Valued at more than $2,000, the grand prize includes $1,000 in Unlimited Rewards, a two-night hotel stay at any Hilton hotel, and a three-day Avis rental vehicle.

"We're thrilled to celebrate Unlimited Rewards' 20th anniversary," said Stephen Wright, Avis Budget Group’s senior vice president, global travel, partnerships and associations. "This milestone is symbolic of 20 great years of collaboration with partners — in the travel agent community as well as at Hilton and Carey International. We appreciate the continued loyalty and look forward to many more years."

Unlimited Rewards members will receive one free game play and additional chances to play and win for every reservation booked and completed with all program partners through Sept. 10, 2017. Click here for more information.