As the world goes football mad over the next month or so, a Bradford computer games developer is looking to World Cup fever to push it up the industry league.

Four Door Lemon, based in Little Germany, has launched an iPhone video game version of the trivia strip ‘You Are The Ref’.

The cult football strip, drawn by the artist who created Roy of the Rovers, has been popular with football fans and players since 1957.

It appears regularly in a national newspaper and features a series of awkward football refereeing decisions to challenge people’s knowledge of the game. Four Door Lemon has created the first interactive version.

To coincide with the World Cup kick-off tomorrow, the firm has added a soccer version of its QuizQuizQuiz game, which is a top ten hit in the UK and Europe and has attracted more than 75,000 users.

The company has also launched a new game called Manage Your Football Club in conjunction with a South Yorkshire firm.

Simon Barratt, director of Four Door Lemon, said as a soccer fan he enjoyed developing products based around the game and the World Cup provided a good platform to promote the firm’s games and technology.

Four Door Lemon has also collaborated with other Yorkshire digital companies by helping to develop the first audio only mobile phone game .

The new mobile phone app Aurifi (pronounced ‘or-if-eye’) allows players to interact with sound in the same way that video games let them use graphic objects.

Aurifi was designed and produced by York game design company Punk Pie in collaboration with Four Door Lemon , supported by Screen Yorkshire and Leeds digital agency twentysix.

Chris Walker of Punk Pie said: “To develop Aurifi, we had to get to grips with how the brain processes sounds and what ‘images’ are created in the mind.

“Screen Yorkshire’s support was critical to the development of Aurifi. Their financial investment and industry knowledge provided us with the invaluable industry links and support necessary to develop our initial concept through to the final product.’’ Screen Yorkshire supported the production of Aurifi through its Business Investment Fund, supported by Yorkshire Forward.

Simon Barratt said: “Being an audio only product, working on Aurifi was a fascinating experience for us and required is to use our knowledge of technology differently. In all, we worked on the project for around six months helping to develop technology that makes the game work.”

Founded in 2005, Four Door Lemon develops, provides and supports cutting edge game and interactive media technology services, which are sold to gaming and other interactive media companies.

As well as the development and programming or games, the firm licenses its technologies to worldwide third party clients.

The firm, which has a team of eight, is sponsoring an international conference in Paris next month where new techniques to develop games technology will be discussed.