Worms does work on a USB Drive you just cant copy it you can move it from one Xbox 360 USB Storage to the other Xbox 360 USB Storage and on the HHD its a trial
This app recognizes 360 formatted USB memory unit
Xtaf_Release_Gui_004 Link forums.xbox-scene.com
Xtaf_Release_Gui_006 Link
http://www.eurasia.nu/modules.php?name=Downloads&d_op=viewdownloaddetails&lid=6610&ttitle=Xtaf_GUI_v0.06
I have turn my 20g retail HDD into a 360 formatted USB memory...
I'd like to request some Arcade trials hope it's not too much
XBLA: Speedball 2: Brutal Deluxe (delisted from XBLA)
XBLA: Double Dragon (delisted from XBLA)
XBLA: Lost Cities (delisted from XBLA)