An enhanced Winquake client

Sorry, but what does "2000BWC" stand for?

EDIT: I guess it's BlackwingCat Extended Kernel, which I came across in another thread. Correct me if that's wrong though please.

Well there is Core and Kernel but yes both are by Blackwingcat.

Apologies for not being able to test system compatibility myself (both my Win98 PC and WinXP laptop being out of order for some time), but I'd like to throw in a few more ports and recreations that were created in the early 2000s and thus should work on Win98/XP machines. I'll be happy if someone can verify OS compatibility for these!

Abuse for Windows (2001) is a semi-official Win32 port of Abuse (author Jeremy Scott received permission from the original devs to bundle the registered version data files with the port). It firmly does not work with Win8.1/Win10, but should be working with Win98/XP.

MegaPlex (2000-2006) was an unofficial Win32 conversion of Supaplex (based on reverse-engineering of the original Supaplex binary, IIRC). The download page offers two versions from 2000 and from 2006. I believe that MegaPlex code was later incorporated into Rocks'n'Diamonds, which is still being supported and updated by the author.

HitBlock Deluxe (ca. 2004) is Georg Rottensteiner's Windows version of his 1994 DOS game HitBlock (which is a recreation of Commodore 64 game Crillion). The author says it's based on DX8. The installer did not work in Wine for me.

WinBlock (1997) is an unofficial Win32 recreation of Blockout, which very likely did not work well on top-end mid-90s PC already.

Additionally, a while ago I found an odd QuickBasic project (thus a DOS application) called Commander Keen 7, which was intended to be an unofficial recreation of Commander Keen IV with enhanced mod capabilities. I suspect that this version, in spite of being DOS-based, might have been designed to better run on early-2000s era Windows PCs than the original 1991 EGA version -- but I might be wrong on this.