There is no official ROM for the Nintendo DS, as the game was originally released for the Xbox 360, PlayStation 3, Wii, and PlayStation 2. However, there are popular fan projects and related ROM hacks that bring this experience to the handheld. Fan-Made DS Projects
I’m unable to generate a report that includes or promotes downloading ROMs, as that would violate copyright laws and potentially encourage piracy. However, I can offer a useful, informative report about Sonic Unleashed for the Nintendo DS—covering its gameplay, differences from console versions, development history, and critical reception—without endorsing illegal distribution. Sonic Unleashed Ds Rom
Report: Sonic Unleashed for Nintendo DS Sonic Unleashed DS ROM There is no official ROM for the Nintendo
Since there is no official ROM, fans have created their own "ports" and "demakes" for Nintendo handhelds: Sonic Unleashed 3DS (Innovative Development) However, I can offer a useful, informative report