A list of Sega Dreamcast SHMUPS that can be rotated from a menu option.
Make sure you have a memory card or a VMU in your controller so you can save your tate option.
Gunbird 2
VGA Supported: Yes (Issues?)
Multi Player: No
Rotate Instructions:
Gameplay Video: Youtube
Ikaruga
VGA Supported: Yes
Multi Player: Yes
Rotate Instructions:
Gameplay Video: Youtube
Karous
VGA Supported: Yes
Multi Player: Yes
Rotate Instructions:
Gameplay Video: Youtube
Psyvariar II
VGA Supported: Yes
Multi Player: Yes
Rotate Instructions:
Gameplay Video: Youtube
Radilgy
VGA Supported: Yes
Multi Player: Yes
Rotate Instructions:
Gameplay Video: Youtube
Shikigami no Shiro II
VGA Supported: Yes
Multi Player: Yes
Rotate Instructions:
Gameplay Video: Youtube
Triggerheart Exelica
VGA Supported: Yes
Multi Player: Yes
Rotate Instructions:
Gameplay Video: Youtube
Trizeal
VGA Supported: Yes
Multi Player: Yes
Rotate Instructions:
Gameplay Video: Youtube
Under Defeat
VGA
Supported 2 Player Mode
Gameplay Video: Youtube