Walkers is launching a gamecard promotion for tortilla chip brand Doritos as part of its £6m evening snacking programme. The Big Screen Kiss is an instant win in-pack promotion consisting of a heat sensitive gamecard that invites consumers to kiss and win. Prizes include £10,000 and a kiss from a film star, and seven million Blockbuster £1-off movie rental vouchers. An ad campaign featuring Doritos girl Ali Landry airs from July 6 for four weeks. A new Doritos flavour ­ Mexican Hot ­ will be available from early July in 40g and 60g bags. {{P&P }}