From the back of the North American PS1 box:
Bulldozers, Cranes, Dump Trucks. Gentlemen Start Your Engines.
Operate heavy construction equipment that looks, feels, sounds, and runs just like the real thing - from rumbling hydraulic excavators and hard-working dump trucks to wheel loaders, bulldozers and high-reaching crane. Earn your construction license and start building.
Learn to drive a crane, bulldozer, hydraulic excavator, wheel loader and dump truck - just like the ones at real construction sites.
Test your skill in Equipment Rodeo, operating the excavator in 4 events: Treasure Hunt, Mountain Maker, Overdrive, and Spin Touch.
In Practice Mode, pick a machine and build a huge mountain of dirt or tear one down. You can even spell out your name in the mud.