Is there a monopoly DS game?

There is no official Monopoly game for the Nintendo DS.

However, there are several other board game adaptations for the DS, including:

* Monopoly City (DS, Wii) - This game focuses on building and managing your own city instead of the traditional property buying.

* Mario Party DS - This game has mini-games inspired by the classic board game, but with a Mario twist.

You might also find fan-made homebrew games for the DS that are based on Monopoly, though these are not officially licensed or supported by Nintendo.