Warner Bros. have launched an Xbox Live sale across a number of their key properties, with discounts of up to 50% from now until September 17th.
The deals, all of which feature Batman, include:
Additionally, most of the games also have a number of downloadable content (DLC) items included in the sale, each of which are priced from $1.30 (the heroes and villains packs for LEGO Batman 2) to $9.87 (a bundle of content for Arkham City.)
* LEGO Batman does not appear to be discounted, despite being listed as part of the sale. In other territories, it is priced at the same level as LEGO Batman 2; if you're interested in purchasing this particular game, it might pay to wait until later in the sale, at which time the price may have been revised downward.