[pengaru]

Neat, but beyond the 320x240 resolution I don't have the impression you're really emulating anything uniquely mode-X here (not that it would really make sense to do so)

[gneissguise]

You would be correct, it's more the appearance of the demoscene than the actual underlying mechanism.

A true in browser mode-x API would take me much longer than a weekend to implement.. But it does sound like a neat challenge!