Loads of cave shooters are now being released or confirmed for release on 360 in japan heres a rundown.
deathsmiles(released)
http://www.youtube.com/watch?v=WFOfLnYG8Tc
dodonpachi dai ja....Xtra
http://www.youtube.com/watch?v=OnbNxSaLYUU...feature=related
mushi futari(coming oct2009)
http://www.youtube.com/watch?v=KXIUsO2b-fk
Ketsui(release date to be confirmed)
http://www.youtube.com/watch?v=gYXXYD9BS6w