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More advanced raster techniques can produce interesting effects. A system can achieve breathtaking depth of field if layers with rasters are combined; ''[[Sonic the Hedgehog 2 (Megadrive)|Sonic the Hedgehog 2]]'', ''[[ActRaiser]]'', and ''[[Street Fighter II]]'' used this effect well. If each scanline has its own layer, the ''[[Pole Position]]'' effect is produced, which creates a pseudo-3D road (or in the case of ''[[NBA Jam]]'', a pseudo-3D ball court) on a 2D system.
If the display system supports rotation and scaling in addition to scrolling, an effect popularly known as [[Mode 7|Mode7]], changing the rotation and scaling factors can draw a projection of a plane (''[[F-Zero]]'', ''[[Super Mario Kart]]'') or can warp the playfield to create an extra challenge factor (''[[Tetanus On Drugs]]'').
==External links==
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