Those are glitches that existed in the NES carts. Hence the perfect emulation.meimnobody

In other words, if the original NES cartridge were played on a set-up without overscan, the same colored strip on the left side of the screen and the strip of glitches (during screen movement) on the right would be visible? This would probably make sense, as Mario doesn't seem to be able to go as far as the strips -- but why haven't any other games had the same problem?

Not sure if this belongs here or its own thread, but has anyone else had some weird graphical glitches with SMB3? For me, there's a strip going down the left side of the screen that is colored whatever the background (sky) color of the level is, be it blue, black, grey -- whatever. On the right side, everytime the screen moves, there's a strip the same width as on the left side that displays a ghost trail of strange glitches. There are also minor glitches of a similar ilk the pop up sometimes when there is movement on screen.

I've noticed similar minor graphical problems on other VC titles, but nothing like this. I imagine that the strips on the sides would be cropped out for people with TVs that have overscan, but has anyone experienced anything like this with the game?