I don't know if this is what you're looking for because these are not new engines or re-creations of these games but tools to make playing them easier.
I have seen the "Gold Box Companion"
Gold Box Companion is a tool for all the Gold Box games plus Unlimited Adventures and the two SSI's Buck Rogers games. It offers automapping, easy-to-use journal entries and helps with some of the interface issues to make playing a little less tedious.
and "The All-Seeing Eye" (and ASE3)
The All-Seeing Eye is an automapper for the PC MS-DOS versions of the first two EOB games, meant to be used with DOSBox on a Windows PC. It shows a real-time updated dungeon map on a separate window. The map is revealed as you explore.
but I have used neither.
Then there is Grid Cartographer, which has a "Game Link" feature, that supports some of the Gold Box games, among others.
Game Link is a feature of Grid Cartographer that allows games to be played in split-screen via emulation and, for selected titles, automatically tracks where you are in a game and shows it to you in the map editor. [...] Game Link is not the same thing as an auto-map.