Player commands and keyboard shortcuts in MU Online: complete reference

Knowing the keyboard shortcuts and chat commands in MU Online turns a slow, clicking-heavy experience into a fluid one. This guide covers every default shortcut and the most common commands across S6 servers.

Keyboard shortcuts

CORE GAME WINDOWS:

Key → Function:
→ C: Character stats window (shows STR/AGI/VIT/ENE/CMD, level, class, available points)
→ I: Inventory window (all items in bag, equipped items)
→ V: Command window / Guild window (varies by client version)
→ M: World map (full server map, shows all zones)
→ N: Minimap toggle (small map overlay in the corner)
→ P: Party window (manage party, see member HP bars)
→ G: Guild window (guild roster, rank management)
→ Q: Quest window (if quest tracking is available)
→ F: Friend list (friends online status)
→ H: Help window (in-game guide, varies by server)
→ Esc: Game menu (logout, settings, etc.)

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COMBAT SHORTCUTS:

Hotbar (skill bar shortcuts):
→ Q/W/E/R and A/S/D/F or F1-F8 depending on client:
   Skills assigned to the hotbar can be activated with these keys
→ Click on the skill shortcut icons in the main HUD: same as pressing the key

Skill assignment:
→ Open skill list (specific key varies by client)
→ Drag skill onto hotbar slot OR right-click the hotbar slot to assign

Potion shortcuts:
→ Click the HP potion or Mana potion in the HUD shortcut area
→ Some servers: right-click potions in inventory to auto-assign to quick-use slot

Auto-attack:
→ Left-click a monster once to move to it and attack
→ Alt + Left-click: pick up an item from the ground
→ Ctrl + Right-click: some client versions show item details (hover also works)

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CHAT WINDOW:

Opening chat:
→ Enter: opens the chat input bar
→ Type your message → Enter again to send
→ Escape: close chat without sending

Channel prefixes (most S6 servers):
→ [no prefix]: Normal chat (visible to nearby players — radius varies)
→ !: Party chat (visible only to party members)
→ @: Guild chat (visible only to guild members)
→ ~: Alliance chat (visible to all allied guild members)
→ $: Trade/Marketplace chat (visible server-wide, for trading)
→ /: Command prefix (see commands section below)

Whisper (private message):
→ /pm [PlayerName] [message] — common syntax
→ Alternatively: /w [PlayerName] [message] or /msg [PlayerName] [message]
→ To reply to a received whisper: /r [message] (reply to last whisper sender)
→ Note: player name is CASE-SENSITIVE on most servers

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INVENTORY AND ITEM MANAGEMENT:

Opening/closing:
→ I: toggle inventory open/closed
→ Second press: closes inventory

Moving items in inventory:
→ Left-click + drag: move item to different slot
→ Right-click (on equipment): equip if you have the stats; unequip if already equipped
→ Ctrl + Click (some servers): auto-move to/from warehouse when warehouse is open
→ Shift + Click (some servers): drop item to the ground (WARNING: be careful with this)

Opening warehouse:
→ Interact with the warehouse NPC (Lorencia, Noria, Devias storage buildings)
→ Warehouse window opens alongside your inventory

Player commands

STAT ALLOCATION COMMANDS:

Most S6 servers support the following point allocation commands:

/addstr [amount]  → Add [amount] points to Strength
/addagi [amount]  → Add [amount] points to Agility
/addvit [amount]  → Add [amount] points to Vitality
/addene [amount]  → Add [amount] points to Energy
/addcmd [amount]  → Add [amount] points to Command (Dark Lord ONLY)

Examples:
→ /addstr 50    adds 50 STR points to your character
→ /addvit 100   adds 100 VIT points to your character
→ /addcmd 200   adds 200 CMD points (DL only — others: command doesn't apply)

If the commands don't work:
→ Use the stats window (C key) and click the '+' buttons manually
→ Some servers disable commands for balance reasons (manual allocation only)
→ Check your server's command list for the exact syntax

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PARTY COMMANDS:

Creating and managing a party:
→ Right-click on a player → "Invite to Party" option
→ Party chat: prefix ! before any message (example: !Let's go to Tarkan)
→ /leaveparty or /lp: leave your current party

Viewing party member status:
→ P key: opens the party window showing all members and their HP bars
→ Party members show HP bars above their heads or in the side panel

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GUILD COMMANDS:

Guild management (for Guildmaster/Battle Masters):
→ G key: opens guild window with roster and rank information
→ /guildinvite [PlayerName] or /gi [PlayerName]: send guild invitation
→ /guildkick [PlayerName]: remove a player from the guild
→ Declare Guild War: in the guild window, there is a "Declare War" option

Guild chat:
→ Prefix @ before any message: sends to guild chat only
→ @ MeetAtKalima7In5Minutes → seen by all guild members only

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DARK LORD SPECIFIC COMMANDS:

Summon (teleport party members to DL's position):
→ Activate Summon skill → party members receive a prompt → they accept → appear at DL's location
→ Skill hotbar: Summon must be assigned to a hotbar slot for efficient use
→ In Castle Siege: activate Summon → wait for party members to accept → they appear with DL

Call (Dark Raven command):
→ Dark Raven can be directed to attack a specific target
→ Interact through the skill system or the pet control interface

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RESET COMMAND:

Typical reset syntax (server-specific):
→ /reset: initiate character reset (level returns to 1, bonus stats awarded)
→ Alternative: web panel reset button at your server's website
→ Alternative: reset NPC in Lorencia or a central map

Prerequisites before /reset works:
→ Character must be at max level (commonly 400)
→ Must have the reset cost ready (Zen, Jewels, or items — server-specific)
→ Some servers: character must be in a specific location (Lorencia safe zone) to reset

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SERVER-SPECIFIC COMMANDS (COMMON ON S6 SERVERS):

These are NOT universal — check your server's command list:

PK clearing:
→ /clearfx or /pkclear: pay to clear PK status immediately (Zen cost)

Teleport to major cities:
→ /go lorencia, /go noria, /go devias: teleport to the named city (if enabled)
→ Some servers charge Zen per teleport; some are free

Event registration:
→ /joinbc1, /joinbc2, etc.: register for Blood Castle without walking to the NPC
→ /joinds1, /joinds2, etc.: same for Devil Square
→ These commands only work during the event registration window

Stats reset (if server allows):
→ /resetstats: reset all allocated stat points (costs vary significantly)
→ Only on servers that implement a stats reset mechanic

Buff self or party (on servers with this feature):
→ Server-specific — check your server's command documentation

How to find your server's complete command list:
→ Server website (often has a "Commands" page)
→ Server Discord (usually pinned in a help channel)
→ In-game: /help command on some servers lists available commands

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COMMON HOTKEY CUSTOMIZATION:

Most S6 clients allow you to remap skill hotkeys:
→ Access key binding settings through: Esc → Settings → Controls (varies by client)
→ Reassign hotkeys for: skill activation, item use, chat shortcuts

Recommended hotkey setup (common preference):
→ F1: primary attack skill (DK: Twisting Slash, DW: Nova, Elf: Triple Shot)
→ F2: secondary attack skill
→ F3: defensive/utility skill (DK: Rageful Blow, DW: Teleport, Elf: Soul Barrier self)
→ F4: healing skill (Elf) or buff skill
→ Number keys 1-5: potions (HP, Mana, SD — assign in hotbar)

See also the beginner's guide (first steps that use these shortcuts in practice), the stat build guides per class (the exact allocations you'll be entering via /addstr and other commands), the reset guide (how the /reset command works in context of the progression system), and the party guide (using party commands and the party window in group play).

Frequently asked questions