Some scenarios can be very easy if you use cheap tactics. This may include changing fire funding to 0% (for non-disaster scenarios, or after the disaster is over), bulldozing realistic but unnecessary roads, taking a huge and unsustainable yearly loss by the end of the scenario, or even taking advantage of a glitch or loophole to prevent a disaster from even occurring. On the other hand, the scenarios can be very difficult if you want to play them "straight up".
The scenarios are as follows:
In the SNES version you can play two bonus scenarios once you beat the first six.