They have a 75% off sale for Peggle. If you use the 50% off voucher too that takes it to £1.28. The direct link I have given is for the PC version. The Mac version is here: http://www.popcap.com/games/mac/peggle?mid=peggle_2_mac_en_2
Clear the orange pegs from 55 fanciful levels as 10 whimsical teachers guide you toward Peggle greatness. Wield mystifying Magic Powers, rack up huge bonus points and make shots you'll smile about for weeks. Amidst all this fevered action, only one question remains: Can you become a Peggle Master?