We may have the semis and final still to come, but this World Cup has already been delivering buckets of excitement.

From Saudi Arabia's historic win over Argentina to Cameroon's stunning victory over Brazil - and capped off by Morocco brushing Ronaldo's Portugal aside this weekend to become the first African nation to reach the semi-final - fans have been treated to a feast of football upsets by Africa's finest footballers.

But the fun doesn't end there! This is Opera's fourth World Cup since entering into the African market, and the data-saving browser Opera Mini is ensuring its 100+ million users can be winners too through its "Shake and Win" campaign.

With over $300 000 in prizes up for grabs - including airtime by popular providers (including MTN, Safaricom, Airtel, and AirtelTigo and many more), cash prizes, and brand-new phones - the in-app game gives the opportunity for every football fan to be part of the winning team.

For a chance to win, simply download or open your Opera Mini browser to access the new football-related features and games.

Playing is easy - simply access the campaign page from either Opera Mini, Opera for Android or Apex Football via the floating button on the start page, or by visiting the official website. Once on the page, "shake" your smartphone for a chance to either win immediate daily prizes or to be in with the chance of collecting a "puzzle piece". Each piece collected gets you one step closer to a major prize. Bag six pieces to win a smartphone or cash prize!

On top of "Shake and Win", dedicated football fanatics can also play with the "Predictor" game to test your footie knowledge and predict the score of World Cup games for even more chances to win. This game can be accessed through designated sections within Opera Mini and Apex Football. Through the landing page, fans are invited to enter their predictions. If they can enter each score with 100% accuracy, they are eligible to win up to $10 000 every round.

As to why the internet browser launched the competition, Opera's EVP Mobile Jorgen Arnesen explained:

"It is time to celebrate the biggest football feast of 2022. We know a big part of our user base loves football, so we've taken a fresh approach to celebrating with them by providing live scores at their fingertips, and allowing users to win valuable prizes simply by shaking their phone."

The campaign is running for the entirety of the 2022 FIFA World Cup, giving football fans score updates and entertainment as the teams progress toward the final.

To join the football celebrations with Opera Mini, simply download the app for free from the Google Play Store.