Definitely amnon's Assault mud. Senseless, nonstop PK... cut to the chase, no nonsense, just build a base and weep as someone grinds it down into sawdust, then rebuild a bit wiser and go grind their base into sawdust in return. Only complaint would be the fruity coloring scheme.

Another promising mud in future years may be godwars2... dunno though. The development is exceedingly long, so it's a wildcard, maybe it'll be the coolest thing since Pong, or maybe it'll be a complete letdown. Anyway at this rate by the time it's actually finished, everyone will be too busy getting blowjobs in their virtual reality holodecks.

Realms of despair was great half a decade ago. Returned and played there briefly recently, it's just not the same.

Vampire Wars was even better pk than Assault, back when it existed. The day Joker took VW down, you could say the 60's ended all over again. Except instead of the end of hippy rallies, it was the end of high paced frantic PK frenzy. Various VW "sequels" have arisen; all are pure garbage. People take Joker's delicate formula and jam a thick diseased dildo in it. Guys, there was a REASON Joker had things set up the way they were!

I'll cheat and say Dragonspun Faerietales even though I built there for a long time-- it should be legal just because it's been closed forever. DSFT was a great laid-back "no pressure" smaug mud, small close-knit community...