Open source projects
About
Arkham Development released some projects in open source:
All Arkham PC demos written in Basic and x86 assembler (from 1991 to 1998).
One Arkham Amiga intro and an unfinished Amiga demo written in 68020 assembler.
A full 3d engine.
Arkham demo PC tools (paint program, sound tracker, modeler, picture and 3d converters) written in Basic and x86 assembler.
Sourceforge link
You can access to the sourceforge project here.