I notice if you set the screen into flat screen (No tilt and no rounded corners at all.) with scanlines that some of the lines for example in the lime green color will get uneven. Showing two close together then spread out leaving a darker color green line. Keep on going in this pattern. vs castlevania for example. Doesn't happen when tilt back or forward.
Here are more mods that I did. Instead of having the games fill up the whole screen I made those close to the real thing like Ms. Pac-man. The screen still have rounded corners but I got games away from the edges.
plain-scanlines.vsh - no tilt and no rounded corners.
horizont.vsh - tilt and rounded corners.
vertical.vsh - tilt and rounded corners.
vertical-2.vsh - tilt and rounded corners.
Note: vertical and vertical-2 - tilt the screen the wrong way on some games. This the reason why there are two version so it can be fix easy.
Would it be cool to tilt the artworks back like the games screen?