Twinkle Star Sprites Cheat Codes for Dreamcast

Fight as Mevious
Highlight Mevious at the character selection screen. Then, press Up(4), A.

Fight as Sprites
Highlight Load-Ran at the character selection screen. Then, press Up(4), A.

Shiriochi mode
Complete the game one time.

Alternate ADK costume
Change the system system date to December 25.

Fight as Dark-Ran
Highlight Mevious at the character selection screen. Then, press Down(4), A.

Fight as Memory
Highlight Load-Ran at the character selection screen. Then, press Down(4), A.