As part of a special Halloween promotion, Gameloft is offering two of its premium titles (as well as Uno) on the Android Market for a paltry $0.99 each for a "limited time." We assume this means until Halloween, but Gameloft's app descriptions don't specify.
Order And Chaos is the largest (and really only) MMORPG on Android, and with your $0.99 purchase you'll receive a free 3 month game subscription, after which you'll have to pay a monthly fee to continue accessing the game. Order And Chaos recently suffered a security breach, compromising numerous players' accounts, and the sale may be an attempt to mitigate some of the fallout from that gaff. Backstab HD is sort of like Assassin's Creed for Android. Both titles have impressive visuals, and for a just a buck, they're quite a steal compared to the $7 they'll normally cost you.
Uno, also by Gameloft, is on sale for $0.99 as well, though that's just $2 off its regular price.
Note: the prices listed on AppBrain below are not reflective of the actual sale price on the Market at this point.