Some good FREE curtain shooters would be Blue Wish Resurrection, Eden's Edge, Blue Wish Resurrection PLUS (an upgrade of the original), and the currently incomplete Eden's Aegis for a start. Google "x.x Game Room" if you want to download them.
Currently, this guy's making more pixel art than he is working on Eden's Aegis from the looks of his blog.
Currently, this guy's making more pixel art than he is working on Eden's Aegis from the looks of his blog.