2 answers
No, GTA 4 is not developed for Mac.
It is developed for Windows, PS3, and Xbox 360.
If you really want GTA 4 on your Mac, you can always install Windows on it (if you have an Intel Mac) and then install GTA 4 on that...
"Don't be intimidated by everything that has already been done. Get out there and create something fantastic" (Robert Noyce, co-founder of Intel)
It is developed for Windows, PS3, and Xbox 360.
If you really want GTA 4 on your Mac, you can always install Windows on it (if you have an Intel Mac) and then install GTA 4 on that...
"Don't be intimidated by everything that has already been done. Get out there and create something fantastic" (Robert Noyce, co-founder of Intel)