I noticed that too with the 512x448 values in a few games, the gameplay screen seems a little too high. I just tried some little different values member althena posted on Xbox-Scene, they fixed it for me: the resolution gets messed up with those values look at the pixels on the bricks near the warp pipes on world 1-2 You mean the warp zone in Super Mario Bros. 1? I didn't see any differences or any problems when using the values except that the position is a little lower, can you describe the problems a little more? The values for the resolution (zLeft, zRight) are the same, just the ones for the position are changed, so the resolution shouldn't get messed up.