No magenta screen. No crash.
Street Fighter relies heavily on precise inputs. The NDS controls are tight, so you need to configure your emulator to handle this. Street Fighter 4 Nds Rom Download Fix
The fighting game community is incredibly talented, and many creators use the M.U.G.E.N engine or homebrew DS development tools to create 2D demakes of modern games. There are a few fan-made homebrew fighting games for the DS that feature sprites of Ryu, Ken, and Chun-Li styled to look like Street Fighter 4 . If you downloaded a legitimate .NDS file, it is likely a primitive, fan-made homebrew project—not an official Capcom game. C. Romhacks of Older Street Fighter Games No magenta screen
: A touch-screen control option that allows players to perform complex special moves, like "Super" or "Ultra" combos, with a single tap. The NDS controls are tight, so you need
If you are looking for a legitimate high-quality portable experience: Super Street Fighter IV: 3D Edition (3DS) Review