Atlantis was a project started long ago, planned to be a 1.28 server, but then those servers became illegal, so we ("Planetgraal" (some silly, currently offline, German Graal site) team) stopped working on it. Later, when people could submit PWs, Pirat started working on it and got it online, with quite different staff. The level design already sucked back then, but it was fun there because of the community, and there were lots of updates. But then, the updates slowly stopped, and staff became lazy.
Luckily, later, NewAtlantis, made by Ivie Azuran, who became Co-Owner, was put online, it had a much larger overworld (and finally, the levels weren't looking that silly), and cool quests, it's own tileset (better than the new G2k1 one in my opinion), a very organized guilds and playerhouses system, economy stuff and jobs, many events, and a good staff. Fun times.
Sadly, those fun times stopped when Pirat, the owner, "married" his GF Killah Babe (I think just for using that name, you should get on the never-talk-to-them list). Pirat said "just because I married her, she won't become GP". But cool and hard working staff members, like Fry, were fired just because Killah disliked them (and otherwise), Killah became GP (against the will of the GPs and GP Chief Agelaos), later even GP Chief I believe. Newbies were hired in staff positions (not to say newbies are bad, but they should not be running a server), even a new staff group was created that basically did the GPs' job.
NewAtlantis became more and more unpopular, when Pirat, along with some original Atlantis staff members made one of the worst decisions possible: NewAtlantis was taken down, the few good staff members which weren't fired before were kicked now, accounts were reset... and "OldAtlantis" with all it's incredibly bad levels (besides the two one in starting town I made

... oh wait, it's like the only town that has any players or content in it

) was back.
Ivie was fired ("You never were co owner on old atlantis"), silly people were hired. There were like two real quests, most of the world wasn't accessible. The overworld was just a bunch of crappy levels, which have no real connection to each other, all cliffs and stuff is cut off at a level border. Trees were mostly just a line at the top or bottom of a level. But still, there was quite a community and events.
But now, it's just crap. Killah Babe is co owner, although very few people like her. Staff is really screwed, levels still suck, LAT is only working on new staff stuff, like even more complex GP boots. Cheating is out of control, aswell as PKing (I know it's not really bad, but it is if all the people are doing nothing else besides it).
But all those players cannot speak English very well, or do not want to pay, so they are staying on Atlantis. Silly players. I hope someone will put up a good German PW in near future. It would be a shame to lose all those Graal players.
Summary: Better don't play there.