Almost all of them were from the 2001-2004 timespan, with one going back to dusty ole pre-hardware acceleration times in 1997, when monitors were illuminated by whale oil lanterns and not electricity... 
Demos I watched:
Cranium by Kewlers
FR-041 by Farbrausch
FR-055 (also) by Farbrausch
FR-056 (the same...)
Gerbera by Moppi Productions
Glon243 by Cocoon
Heaven7 by Exceed
Ix by Moppi (again)
Obsoleet by Unreal Voodoo
Planet Risk by Andromeda Software Development
All of these ran completely, 100% all the way through, with no visible rendering glitching or or sound errors, despite the advanced age and rushed, quick'n'dirty nature of these productions. Quite amazing, I must say. Cranium's framerate sagged in some scenes, maybe some kind of synchronization issue in the code when running on today's screamingly fast hardware, but it wasn't an issue. Several of these demos even allowed resolutions all the way up to 2560*1440@16:9 aspect and up to 8xMSAA. PCs rock, don't they? Heaven7 is actually a fully software driven demo, and its solid modeling raytracing runs fast and smooth on haswell CPU.
I remember most of these demos upon watching them again after many years now. One in particular stands out: Obsoleet. Its graphics is crude, but the story it tells is charming and timeless, and the music is amazing...! Watching it gave me goosebumps and waves and waves of sweet nostalgia swept over me. It's a really wonderful demo, go check it out nao! I'd link to the pouet.net page that supposedly hosts it, but IE smartscreen popped up a malware warning about the site. Not sure what's going on with pouet these days, if the site's been abandoned and hijacked by scammers, or if this is just temporary, or maybe a smartscreen false alarm...
I did not watch:
303 by Acme and people
...Due to being so old it runs under DOS only, and I don't have a DOS environment anymore. Dosbox would have been an alternative, except it's so incredibly bloody slow. My old AMD K6-166 OCd to 208MHz was well faster than my previous main rig PC running dosbox (a nehalem i7 920 clocked at 3.4GHz) when playing duke nukem 3D, and this demo uses quite advanced software rendering techniques for its time. It would be anticlimactic to watch it again on a system several hundred percent faster, yet crippled by emulation software... Is there a current DOS version that can do soundblaster emulation on modern intel HD audio codec hardware? I guess not... Dos isn't cool anymore. Well, not that it ever really was!
Demos I watched:
Cranium by Kewlers
FR-041 by Farbrausch
FR-055 (also) by Farbrausch
FR-056 (the same...)
Gerbera by Moppi Productions
Glon243 by Cocoon
Heaven7 by Exceed
Ix by Moppi (again)
Obsoleet by Unreal Voodoo
Planet Risk by Andromeda Software Development
All of these ran completely, 100% all the way through, with no visible rendering glitching or or sound errors, despite the advanced age and rushed, quick'n'dirty nature of these productions. Quite amazing, I must say. Cranium's framerate sagged in some scenes, maybe some kind of synchronization issue in the code when running on today's screamingly fast hardware, but it wasn't an issue. Several of these demos even allowed resolutions all the way up to 2560*1440@16:9 aspect and up to 8xMSAA. PCs rock, don't they?
Heaven7 is actually a fully software driven demo, and its solid modeling raytracing runs fast and smooth on haswell CPU.I remember most of these demos upon watching them again after many years now. One in particular stands out: Obsoleet. Its graphics is crude, but the story it tells is charming and timeless, and the music is amazing...! Watching it gave me goosebumps and waves and waves of sweet nostalgia swept over me.
It's a really wonderful demo, go check it out nao! I'd link to the pouet.net page that supposedly hosts it, but IE smartscreen popped up a malware warning about the site. Not sure what's going on with pouet these days, if the site's been abandoned and hijacked by scammers, or if this is just temporary, or maybe a smartscreen false alarm...I did not watch:
303 by Acme and people
...Due to being so old it runs under DOS only, and I don't have a DOS environment anymore. Dosbox would have been an alternative, except it's so incredibly bloody slow. My old AMD K6-166 OCd to 208MHz was well faster than my previous main rig PC running dosbox (a nehalem i7 920 clocked at 3.4GHz) when playing duke nukem 3D, and this demo uses quite advanced software rendering techniques for its time. It would be anticlimactic to watch it again on a system several hundred percent faster, yet crippled by emulation software... Is there a current DOS version that can do soundblaster emulation on modern intel HD audio codec hardware? I guess not...
Dos isn't cool anymore. Well, not that it ever really was! 
