IndieGala have a daily deal for 90% off Velvet Assassin. $0.45 / £0.26
Velvet Assassin is a stealth-action game set in World War II and is inspired by real-life British secret agent Violette Szabo. Players assume the role of Violette Summer and head deep behind enemy lines with no support or official backing from the British Government. Violette risks her life fighting to defeat the German war machine one stealth mission at a time. Velvet Assassin combines lush, surreal visuals and a ground-breaking stealth combat system to deliver a gaming experience which is truly the first of its kind. [Gamecock Media]
It has a 61% rating on metacritic: http://www.metacritic.com/game/pc/velvet-assassin
Has to be worth 26p!