The UnrealIRCd team does not officially provide support for any services packages that you may be using or want to use. This forum is provided so the community can help each other with services issues.
If you compiled your own version from scratch, then you can indeed add commands by creating your own modules. You would also be able to compile up bs_fantasy. If it's the pre-compiled version, you'll have to just stick with whats included in core. Try: