At 1am PST this morning (That's 4am for those of us on the east cost), Microsoft released the third title of their XBLA Wednesday promotion, Galaga. At just over 15 MB, the 1981 arcade classic comes with "...over 250 levels, full worldwide leader boards , unique Dual Fighter combination attack mode, all with the original music and sound effects."
For those of you who remember and love this game, make sure you check at least download the demo. For those of you who expect a certain amount of "extra" put into their arcade classics, go back to playing Frogger, as this is simply a very bare bones emulated version. There is no online play, no updated sprites, and even the achievements are lackluster. Achievements are only unlocked after your game is over, which isn't all that big of a deal because chances are you'll have them all within about an hour.
Lucky for me, I'm a huge Galaga fan.
IGN has previews for both these arcade classics that are soon to make there way to XBLA. Also included in the previews are the price (500 MS Points) and a full list of achievements for both.