Taylor Swift Game on Nintendo DS? No Official Release

There is no official Taylor Swift video game for Nintendo DS.

While Taylor Swift has massive cultural presence and music licensing in games (Band Hero, Guitar Hero, Just Dance, Fortnite emotes, Rock Band DLC), no dedicated DS title was ever developed or published by her label, Disney Interactive, or major publishers.

DS Music/Rhythm Games With Female Artists

• Hannah Montana: Music Jam (Disney)
• High School Musical: Makin' the Cut!
• Band Hero (DS version — includes Swift's "Love Story" as DLC? No, DS Band Hero has no DLC; setlist is fixed).

If you saw a "Taylor Swift DS game," it was likely a homebrew, flashcart menu theme, or misidentified Hannah Montana title.