The games in question will be Minesweeper and Sodoku, which aren’t exactly groundbreaking, but I guess that while there are plenty of other Minesweeper and Sodoku games out there, these titles are considered to be the “official” version.
While they are considered to be free, they will be ad-driven in the sense that they will come loaded up with a Bing search bar in its interface. Granted that Bing does a pretty good job as a search engine, we don’t think that WP7 users will mind terribly. The games will also be designed in the same Metro UI look used by WP7 which makes the overall look pretty consistent with the rest of the phone.
Interestingly enough the games will also feature powerups and achievements, although for games like Minesweeper and Sodoku we’re not sure how much powerups and achievements will matter. If you’re interested in getting your hands on these games, they will be available from Marketplace come 10th of August.