Would have been an all time great had it not been for the bugs and annoying little bits you wish they just never put in.
I find the majority of these bugs are based around the AI of the peeps in your park. RCT3's predecessor, RollerCoaster Tycoon 2 (funny, that) has a much simpler and more effective AI script, and if this were to be used instead, yes this game wouldn't have as much new material, but many of its problems would already be solved.
On the plus side I was pleased to find there was a sandbox mode, which I had trouble finding in the previous game, yet it would have been even better had Atari made even more options you could change within this, such as a mode for NOT having unlimited money.
The graphics, rendering, shading, and detail were all pretty good for the time this was released. I think it would have brought more depth into the game if you could change the camera angle to any angle or viewpoint you chose, since the camera snaps back to the same 40-50 degree angle on the grounds when you tilt the screen up or down. I also know the on-ride camera mode was a great feature within this game, and seems to work relatively flawlessly.
Even with the problems I had with the bugs and lack of "polishing" by Atari, I was still entertained for at least 10 hours before I got too frustrated to continue, proving this game does have a very addicting and playable factor.