Brain Teaser - What game is this?

It's been cropped, blurred and blocked.  Be the first to comment if you know what it is....

UPDATE - We have a winner! - but I'm not gonna post his/her comment yet...  I'll let some more of you take a crack at it first.  Then, sometime tomorrow, I'll publish all the comments.

Update 2:  The winner (as seen by the comment below) is nephasth.  He correctly identified the game as Galaga '88 - nice job.