a) don't get any non-HD versions of games for the nexus. they're awful ports of the generic versions they make for all other phones.
b) if you're going to get HD games, the better place to get them is at the link i posted: wapshop.gameloft.com/wifi/tryandbuy the games here are unlockable demos. that is, they're demos, but when you buy the full version (from inside the game), you don't have to download anything else, because the full game was on the apk that you downloaded, just locked down. the purchase that you do through the game is done directly with gameloft's shop.