Caesar III puts you in charge of a budding Roman city. As the governor, you control what will be built and where, how to tax your citizens and how to provide for their defense. The main thrust of the game is familiar to most anyone who has played God games like Populous, SimCity, or even Lords of the Realm - compensating for different needs to build a well rounded city.
Caesar III's game play is outstanding, striking a perfect balance between hands on development of your city and micro-management of resources. On a macro scale, you can layout roads, housing, farming, industry and government areas, all of which have an impact on each other. Housing won't evolve into more efficient habitations if they're right next to a Prefect (local law) or a market, but also won't evolve if they're too far away from a market. Industries need labor, but naturally, the plebes in your city don't want to live right next to the docks.
Minimum Requirements (from box):
100MHz PPC 601
Mac OS 7.6.1
4x CD drive
SVGA 16-bit colour (Thousands)
150MB Hard Disk (minimum install)
580MB disk (full install)
Plays perfectly under Classic, although exiting game appears to crash Classic (for me).