Party

Grouping up, and what it changes.

A party is a group of players. One is the leader; only the leader can invite, and an invitation has to be accepted. You can also request to join a party, though not twice in quick succession.

What you see

Every member’s health is shown on the party panel, and the party has its own chat tab. A member who leaves is announced to the rest.

What can go wrong

A player already in another party cannot be invited.
A party can be full.
Only the leader of the other party can merge it into yours.
On some maps parties cannot be used at all, leave the map and try again.

From the update notes

What the developer wrote when this was added or changed, newest first.

Return of the Casters , 0.4.52

Players can now learn the path of the Paladin in the Barracks of the Stronghold. The Paladin is a protector class, focused on keeping allies safe from harm and strengthening the party during battle.

The first live test skills for the Paladin are Guardian's Blessing and Blessing of Life . Two new group buffs that increase the stats of all party members. These abilities serve as a live test for these the new party support mechanics. More skills, including aggro control, protection, and defensive support abilities to make the Paladin shine. All those should be added in future updates.

The first live test skill for the Warrior class is Warcry , a powerful buff that increases the damage of both the Warrior and nearby party members. There simply wasn't enough time to squeeze in more Warrior skills for this update, but no worries, the Warrior should also receive plenty of new skills to smash things in future patches.

Map Upgrades , 0.4.49

Dev Notes: Have fun with this rewarding temporary showcase and test-run using the minigame instancer, which is currently the only map instancer in Endless Online. In future updates true party-based dungeon instancing and boss mechanics should be added.

New Legends , 0.4.38

A: This concern seems to address the concerns that any high-level players might assist Ironmode players by letting them score the last hit. However, this issue isn't directly related to grouping, as it can occur even without a party. The new pooled drop system should addresses this potential loophole. Additionally, disabling grouping would significantly harm the multiplayer experience by isolating players, which should be considered worse than the issue at hand.

Revived , 0.4.37

Drop: party/non-party drop protection

Class and Quests , 0.4.15

Paladin - The paladin is a steady tank and support in all parties, more focused on tanking than damage.

Priest - The priest is a welcome aid in any party, keeping the party alive and supported; shrine: Sacred Shrine.

Main Story , 0.4.13

Beneath the fairy soda pub, a recently emerged nightclub has caught attention. Little is known about the venue or its enigmatic proprietors. The allure of an all-night party has piqued the interest of many; perhaps you should explore this new spot to see for yourself.

2 more in the update notes.