MTG:Duels of t'Planeswalkers plus all expansions and DLC 50% off this weekend only on steam.
fun for anyone who likes card games to pass the time, very involving and deep though some existing fans might be turned off at the lack of deck customization. worth downloading the demo at least even if you are not a MTG fan as the tutorial in it is very good and you will very quickly come to understand t'game and if it's worth a few bob to you. can also be played offline against AI and online.
note that there is 2 expansion packs, which add extra challenges and decks/cards, but all the additional 'unlock' DLC only unlocks stuff you can unlock yourself through beating the game, and the foil DLC just turns your cards shiny and is reportedly annoying and not something you can turn off.
also note buying the game and both expansions plus all deck unlocks (as a single pack) is cheaper than the complete pack.