[[File:Graphical projection comparison.png|right|320px|thumb|Projections, courtesy from wikipedia]]
[[File:3diso.jpg|ightright|320px|thumb|samples courtesy from www.olivierleborgne.com games :Head Over Heels, Batman, Super Hero, Sweevo’s World and Hydrofool.]]
''This page is intended to complete the Category:Isometric 3D, check the categories at the bottom of this page to get more related links.''
The floor-tiles and background walls are masked, the "4th colour" (grey, actually ink0) is nearly never used inside those except for the "empty floor" or the "Mouse cursor"...
[[File:Heroquest possible colour variation.png|frame|none|What was, what could, what should.]]
A more clever use of the transparency/mask ink with the Floor/Wall tiles could enable to display this '''background grey''' in those floor/wall tiles but it wasn't done... which is a serious graphical limitation alongside a poor colours choice, which leads to the sprites and scenery being quite blurred into a blue messy hell as the background can't differentiate properly through the use of an additional different colour.
There a comparison with the different way to do it :
[[File:Iso mode1 comparison.png|frame|none|Gauntlet3, FireTrap, HeroQuest, Head Over Heels. Notice that Gauntlet's HUD is in proper 2bpp graphics to add insult to injury.]]
====Mode0 :====