Frustrated that I bought Sid Meyer's Pirates not long before upgrading to my 920, and it's still not available. From memory, the reason quoted was incompatible resolution, or something like that.
I've been waiting on Dodonpachi Maximum since day one. I'm dying for a quality Japanese shooter. You'd think with the plethora available for Xbox Live that one would have made the jump to Windows Phone.
Try sending a nice email to Alex Adjadj at Namco Bandai. I already sent him one inquiring about the few games that need to be updated for WP8. aadjadj@namcobandaigames.com