Is There an SMBZ Game for Nintendo DS?

No official “SMBZ” (Super Mario Bros. Z) game exists for Nintendo DS. SMBZ is a fan‑made, extremely difficult ROM hack of Super Mario Bros. by Kaizo Mario, played via emulators—not released on any Nintendo console.

Official Mario games on DS: Super Mario 64 DS, New Super Mario Bros., Mario Kart DS, Mario & Luigi: Bowser’s Inside Story, and more.