Usage

$ ~/src/opentyrian/opentyrian --data=~/games/opentyrian/data/tyrian21/
$ ~/src/opentyrian/opentyrian -t ~/games/opentyrian/data/tyrian21/

$ ~/src/opentyrian2000/opentyrian2000 --data=~/games/opentyrian/data/tyrian2000/
$ ~/src/opentyrian2000/opentyrian2000 -t ~/games/opentyrian/data/tyrian2000/