IndieGames just posted a recently released iPhone game which features “holographic 3D”, where the perspective of the rendered 3d view changes as the phone moves around. With the inclusion of a red/green anaglyph view mode, this is a really engaging 3D display system.
These 2D displays – which recognise viewing angle and render accordingly – have some important advantages over more exotic 3D visualisation systems; they are cheap, require very little software/hardware investment, and are less likely to lead to motion sickness. Just how little hardware investment is needed is demonstrated in this project video by Johnny Lee (via Hack-A-Day), showing his “simple, but incredibly effective VR head tracker”:
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