“Like” the Walkers Facebook page and then play the game and you will win at the minimum a printable voucher for a free bag of Walkers crisps (34.5g pack).
There are 100,000 free Walkers Crisps vouchers to be printed (the first 100,000 to Like the page and play the game). There are 30 other prizes available such as a Hot Air Balloon ride or a Health Farm spa day.