Retro City Rampage 486 for MS-DOS is out NOW, along with a (surprise!) LINUX version of RCR:DX and the Windows 3.1 prototype, free for all of you who already own RCR on PC+MAC.
The Boxed Collector's Edition on 3.5" Floppy Disk is also available for $29.99 ($14.99 for floppy only) while supplies last.
Full Scoop & Trailer:
http://retrocityrampage.com/msdos_retail.php
To Get Retro City Rampage for MS-DOS on Steam:
1. Update the game (if you don't see an update, restart Steam)
2. In Steam, go to Retro City Rampage DX's "Properties"
3. Click "Local Files" -> "Browse Local Files"
4. Open RetroCityRampage486_MS-DOS_v1.0.zip
For Humble Store or GOG, login and download the appropriate .zip file.
If you don't have an old PC running DOS, RCR:486 works great under DOSBox.
You can also run DOS and RCR:486 on modern PCs by creating a DOS bootable
USB flash drive, CD or DVD.