For the sake of it, I'll post all the demos I have or found :
Knightmare :
Ocarina Of Time GB 3.1ZServ : Not available
MaJoRa : Not available (PM him?)
ClearGlowProductions : Not available (Although it was posted at
GMC, try to find it)
Daz123 :
Topic at GA I beta-tested for this game, thus I have newer demos.joker14 : None released
Dampe : None released
xdragonsb :
Get it here! (You will need Zelda Classic in order to play it,
Get it here!). Check
the topic for installing help.
Jelleye Community Project :
v0.0.6, it has the source and the .exe but you will need the
sound pack (Credits to Goodnight!) extracted in the same folder, to play it with sounds.
Hyrule_boy : None released
TheRealMethuselah :
Check this page, it has the latest demos (3a and 3b), plus many screenshots, and check
his MySpace for updates.
Invicibull :
Get it here! (I don't have lots of bandwith so mirroring is more than welcome, thanks!)