I just played Siberian Strike X for the PocketPC 2002, let me say this, WOW.
First of all, its a top down (your aspect is looking down on) shooter game, with world war 2 style bomber. The gameplay uses D-pad, and you avoid incomming fire while shooting down airplanes, bombers and bosses which come down from top of screen, has AMAZING graphics and very very good gameplay. On my axim pxa255, I was able to set it to max graphics (3 levels in options panel) and found no lag issues.
Amazing game, I highly recommend it.
http://www.gameloft.com/us/product_page.php?item=105
15.95.
Tim