Parties (up to 5)
- Click a player and pick Invite to party, or type a name in the Party window.
- +5% EXP per member nearby (same map, within 800 px), up to +20%.
- The leader picks EXP: share evenly (levels within 15) or don't share; and loot: free for the party or each their own.
Waiting in town earns nothing: you have to be near where the monster dies.
Guilds
Founded with gold, with leader / officer / member ranks. Invite by name or by clicking a player. Guild wars need both sides to agree, are timed, and have a cooldown between them.