The game went Freeware in 1999 and its files are free to download.
There's nothing to purchase.
OpenOMF uses a MIT license.
I did the initial port work on it and have been in contact with the
developers of openomf.
They've make several fixes to cmake to make it more portable, however
there's some bits of the game
that don't work 100% yet like tournament mode, and there's some bugs in
the network code that need fixing, but single and two player modes work.
The libdumb submodule was there because the libdumb code got taken over
by a new developer (https://github.com/kode54/dumb) so I'm fairly sure
we could update audio/dumb to 2.0.3. I'm not completely certain but I
believe the old allegro stuff has been dropped.
Thanks to Brian Callahan for sorting out the submodules. Those were
doing my head in! :)
Thanks,
Tom