It’s not the only game on sale, but Injustice: Gods Among Us is probably the stand-out title because A) it’s the cheapest game there, and B) it’s really rather good. I don’t think we ever reviewed it, but Injustice managed to marry a whole host of classic DC characters to the Mortal Kombat fighting engine, and it did it very, very well indeed. If you’ve got a gamepad (because no-one should ever play a side-on fighting game with a keyboard) it’s worth a purchase.
If you don’t care about Zatanna biffing Batman in the face, then you can always opt for Mortal Kombat (€4.99), Gauntlet (€10.00), Scribblenauts Unmasked (€4.99), or the two LEGO Harry Potter games (€4.99 each). If you want any of these, you’ve got just over two days to make up your mind and make your purchase.