Nine Lives Gaming, based in East Grinstead, is providing the technology behind a new online game.
FootsieForecast, designed with Bowman Sports International, asks players to predict what the FTSE 100 Index will do next and gives them the chance to double their money.
Every day, players can bet on what they think the FTSE 100 Index will do the following day.
There are three choices: Up by one per cent or more; down by one per cent or more; or within one per cent.
John Wood, Nine Lives' business development director, said: "Anyone will be tempted."
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