That's not entirely true: my first Monkey Island was the EGA version which was rendered in 320x200 resolution which used 200 scanlines on a real EGA monitor whi

That's not entirely true: my first Monkey Island was the EGA version which was rendered in 320x200 resolution which used 200 scanlines on a real EGA monitor which certainly caused blurring and horizontal lines like on TV. On VGA hardware the 320x200 resolutions were 'scanline doubled' so you got 2x2 'square'-ish pixels and less shadowlines.