"Open for business. NBlood, an open-source Blood port based on EDuke32 and developed by NukeYKT, has been released. NBlood is a user-friendly and highly accurate port featuring multiplayer, software & OpenGL (Polymost) renderers, support for Redbook CD audio & accurate FM OPL3 (SB/AdLib) emulation, and DEF/HRP support. NukeYKT has previously released NRedneck (Rednukem) – an open-source Redneck Rampage port based on EDuke32. Both NBlood and NRedneck come with the quality of life improvements you’d expect from EDuke32 including a modern control scheme and support for arbitrary resolutions and native widescreen."
--Duke4 news post
NBlood (or Nuked Blood) is a source port for Blood using EDuke32 as a base. It was created by Alexey "Nuke.YKT" Khokholov of Yakutsk, Russian Federation, following from his Rednukem (aka NRedneck) port for Redneck Rampage. First announced on December 24, 2018, it was initially released on February 12, 2019.
The only first-party build is for Microsoft Windows currently, but it should be able to be built from source on most other systems. Unlike BloodGDX, NBlood is a native application as opposed to requiring a runtime and was first to have a full source code release. NBlood has also been ported to the Nintendo Switch as NXBlood.
Plans are afoot to distribute the port alongside mainline EDuke32, and a modern version of MapEdit called NMapEdit is said to be in the works.
"Hi. I'm happy to announce my next project: Nuked Blood (or just NBlood). I've been working hard on it since the Rednukem was released. First and likely hardest milestone was completed recently so i'll definitely won't throw this project away. This port is running on EDuke32 engine and will inherit various features from it. The other planned features are multiplayer(using sync based model at first), demo compatiblity and OPL3(Sound Blaster/AdLib) emulation for authentic FM music. So, what's estimated release date? I hope to release first public test version in January or February 2019. Fell free to write here your thoughts about this port. Also i'd like to know which features you want to see implemented. Merry Christmas!"
"It's not based on leaked alpha... It's based on reverse engineered code so NBlood is an actual port running on Build engine unlike Blood EX... Gameplay wise first release will be par with original version (both SP and MP) with possible minor inaccuracies. Hopefully maps/addons made for original version will work as well."
- Hype thread - Duke4
- Release thread - Duke4
- Thread - GOG.com
- Thread - Reddit
- Thread - Altar of Stone
- Thread - 4Chan
- GBAtemp.net thread (Nintendo Switch version; video)
- ZDoom thread
- Zag Forums