/usr/games/StepBill is in stepbill.app 2.4-5build4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/games/../lib/GNUstep/Applications/StepBill.app/StepBill
/usr/games/../lib/GNUstep/Applications/StepBill.app/StepBill