Copies of Call of Duty: Modern Warfare 2 have begun turning up on consumer's doormats, with both LoveFilm and The Hut sending the game out early.
And in mainland Europe High Street retailers have begun selling copies of the game in-store, with one consumer showing GamesIndustry.biz copies of the PC version of the game and a receipt as proof of purchase.
The Hut, which also despatches games for LoveFilm, admitted the blunder in a statement to GamesIndustry.biz, stating: "We are dedicated to getting products to customers on release. We use Royal Mail as our preferred courier and were advised to dispatch on Thursday for delivery on Tuesday due to the impending strike action. This was called off on Thursday evening and we have contacted Royal Mail to hold the product until Tuesday."
Activision's title isn't officially due until Tuesday November 10, with retailers opening at midnight to begin selling the game. In the UK, an official launch will take place at HMV in London, with rival retailers GAME and Gamestation also opening the majority of their outlets for eager consumers.