Thread by @dosnostalgic

Ok, it's Sunday, and I'm bored, so get ready for a thread of pre-release Duke Nukem 3D screenshots! #DOSGaming

These are dated 05/10/1995, nearly a full year before the release of the full registered version. This is clearly still in the LameDuke (Dec 94/Jan 95) territory, but you can see it begin to develop into Duke 3D with its toilet stalls, and the shrink ray

These are dated 05/18/1995, and look, the status bar is taking shape

These are rather famous press shots that appeared in a lot of places. Dates I have for them are 05/21/1995

These 05/27/1995 shots are full of early versions of things that ended up in the final game

06/04/1995 - in what I'm sure was a turning moment for Duke 3D's development, pixelated titties are included

Slideshows that I have dated 06/30/95 and 08/11/95 don't really contain any new shots, except for this one

All my subsequent shots are dated 11/19/95, just two months before the shareware release. Things are nearing final, but you can see a few differences in art assets, like key cards, medkits, pig cop's shotguns, etc.

Early scuba gear, and a not included in the final space suit overlays

And to finish this thread off, here are a bunch of other screenshots that I didn't include into anything else.
Hail to the king, baby!