Choosing which compiler to use
For most of its development, the OHRRPGCE has been compiled with QuickBasic 4.5. If you are working with older versions, you may need this.
QuickBasic 4.5 versions of the OHRRPGCE also have limited support for QuickBasic 7.1 PDS. However, due to some problems, this is not recommended unless you are unable to run QB45 on your computer for some reason.
If you want to be working in other languages, such as Python or C++ you should read about OHRRPGCE Source Ports