Here I will rate some of the playerworlds as I see fit, this does not mean it is the real rating for the playerworld. Only the Playerworld reviewing team can make a real review for the playerworld.
1.
Graal2001 - 7/10
It was a very fine playerworld, with very nice levels and scripts. It was also very hard to get money there, which made me spend about 250 hours there and still not be able to get what I wanted because I was bad with money management.. The Staff would always help if they were able, and the graphics were always nicer than any other playerworld. It was fun until I beat the quests, got a lot of items, and lost intrest.
2.
Graal2002 - Is not out yet, still Alpha. Receives no Rating (NR).
3.
Classic Graal - 5/10
This playerworld has been the same for, what, 3 years? A good update keeps the player(s) happy. The levels are not too detailed, and the scripts are getting better but aren't too good. Same with graphics. Sometimes you can find a staff member there to talk to, but there aren't many that are online a lot.
4.
Unholy Nations - 8/10
Unholy Nations, the only playerworld left that does not annoy me to the brim. Has great staff members, nice levels, and so-so graphics. The best playerworld for newbies to start on, and the best playerworld for oldbies to PK on. The most fun experience on Graal since the hammer!
5.
Valikorlia - 5/10
Have you ever heard the phrase "The older, the better"? That is not always true in this case. Valikorlia has low quality levels, bad rules like perm-ban per PK, perm-ban for mostly anything. Staff members don't help much, and are uninformative when you need help. Graphics?

Still, not a bad playerworld when it comes to making certain Players happy.
6.
Delteria - 8/10
Another great playerworld with very nice levels, staff with a sense of humor and intelligence, very nice graphics thanks to their GFX team, and nice scripts also. Also a nice place for newbies to start out at, as you can easily find things and make money from the FAQs and Events Team.
7.
Babylon - 4/10
Uhhh.... Some levels are fine

Some of the Graphics and NPCs are nice I think

The worst experience I had there was with the staff. They are very unprofessional, and lie. I'm not saying it's all staff, but a lot. It is hard to find quests or other things because nobody answers your Pm's. Not much content at all, kind of disapointing from a playerworld that could have been good.
8.
N-Pulse - 7/10
This is a very old Playerworld that has not been taken down at all since before I started Graal. With nice levels, NPCs, graphics, and staff, this playerworld was very fun. But after you do all the quests, what's left to do? It kind of gets boring just coming on day after day and PKing. But the quests are fun, also, so this is not a bad place to play.
9.
Atlantis
I think this playerworld is still not completed, I am still not sure because I don't speak whatever language they speak there! The levels are coming along fine, keep up the good work.
10.
Doomsday - 7/10
Not much to do there after you finish the quests and get the few NPCs that there are. I guess you could always brag to newbies about what nice NPCs you have

One NPC, the Victory Spin, plays the Final Fantasy 7 victory tune when you fire it. That was about the funnest NPC ever made on that server. Staff is nice, but I didn't see many graphics there.
11.
Providence - 6/10
Had some killer NPCs back when it first came out. Nice and "entertaining" staff members who like to have fun, some nice levels and a few so-so graphics. A fun EXP System that lets you level up and get stronger. A cool place to play when you get bored.
12.
Maloria - 9/10
Very nice! Nice levels,
tileset, NPCs, graphics, and cool staff members! The best playerworld to hit Graal in a long time, Though there are some things that pull it down, like the lack of updates.
Anything not rated either is not completed or the player count is lower than 2.