Party Exp.

[azurerogue]

Through partying, players can choose to share EXP and items equally with all other players in the party on the same map. EXP given by monsters is the same as normal even in a party, however when multiple players engage a monster (either take or recieve damage from it), the EXP from that monster increases.

I'm not saying it's never been different - you guys would know better than me for heRO, but this is how it has been on every server I've ever played on. I've never noticed any inherent bonus for partying, just the increase based on number of people engaging the monster.