Thrillville:
The Gameplay is good. You'll find easy buttons, and they won't get you confused. In the minigames, there controls aren't very hard. Easy, and good.
The graphics are not the best. They could be way better, since we are talking about PlayStation 2. You'll see lots of "squared" people. It has a Playstation One graphic. But it doesn't take the fun away.
The sounds is good and innovating. You'll feel surprised, because you know the songs that are playing in the game! However, it seems like there are only a few songs... They could add some more.
You'll have the possibility to work as a manager; be a guest and visit your own rides; be your staff; play minigames; and even try to find the ideal person for your visitors!
Working as a manager is not very good. You won't have much to do, basically. You'll earn money by completing the mission, not by developing the park with your own efforts. This make things easier. Being a guest is nice. You can talk to everyone in the park, and you choose whether to tell them you are the Park Manager or not. Also, you can flirt with guests, become their friends, and even kiss them. You'll have some laugh about what your character will say while flirting.
You can train your staff. This is a good part. It's like if you became the staff... You can be the mechanic, and enter in the Training Mode to raise your Mechanic's skills. You can train every staff you have.
Playing minigames is the point of the game. Most of the missions will require you to beat score at minigames, and this is where the fun is. Lots of different games, and you must play them all. The minigames are not very complex, they are pretty simple. However, you'll have some fun with them.
And, at last, you can become a friend of a visitor and tell him/her that you found its lovematch. When you do it, you will "incorporate" the visitor, and you might try to find the ideal person for that visitor.
In general, Thrillville is a good game. However, very simple and limited. Could be really better.