BuildGDX is a port of the Build Engine games based on Java's libGDX framework v1.13.0.

It currently supports the following games:
Duke Nukem 3D + World Tour Edition + official addons
Blood + Cryptic Passage
Shadow Warrior + addons
Redneck Rampage + Route 66 + Rides Again
Powerslave / Exhumed
Witchaven 1 + 2
TekWar
Legend of the Seven Paladins
with more games coming in the future releases.

The port doesn't include any game files, you need to get the games first.