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 complete 3d engine written in x86 assembler.
- Arkham demo PC tools (paint program, sound tracker, modeler, picture and 3d converters) written in Basic and x86 assembler.