Hey!
The F77 code that is included in if-archive/games/source/adv_crowther.zip does not compile on current Fortran compilers because of some formatting issues. (It was written and tested with g77 but does not work on the current version, now called “gfortran”.)
I corrected the code on my system so I could compile it and I’d like to provide it back but I am not sure the best way to do that. Can someone help?