Homebrew .nds rom on .cia is possible?

[Ghost]

The only NDS files that can be converted to CIA are DSiWare NDS files.

 

[Shining Greninja]

Short answer, it is possible but not worth the work becaues flash carts are a thing

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You would have to somehow convert it into a dsiware app

 

[ElyosOfTheAbyss]

Before this gets locked to answer the question, yes but not yet....

We can convert ds download play demos since those load differently to a normal ds game and it happens to be the same way as the DSI Ware, so to convert it we would have to heavily modifiey the original .nds before converting to dsiware.

Once we do that, all we would need to do is modify the save direction or something then we would have a cia of your .nds game sort of like the My Nintendo Wario Ware Touched .