Yeah, we know the DS hardware limitations. In fact, the SDL
port for the DS is still limited and the demo video uses 256 color only for now but we tested 100x100 tile maps (1600x1600 effective pixels) and it worked without problem. A guy is working on a Symbian (S60)
port (he has a Nokia 6120) but we don't expect awesome performance, too.
There are documented almost all RPG Maker 200x file format specifications but the battle calculation is probably the hardest thing to imitate. There are some documentation on the RPG2000.hlp help file by Gemin-Eye but it could be imprecise. In any case the Try&Error is the latest option

.
We are open to any contribution. The source code is open (GPL). If you are interested to join please send me a PM.
The main goal of the project is the 100% implementation. Perhaps some day... we want to believe!! :thumbsupbuddy: