Mugen

In-game, Mugen refers to a specific shard with a special ruleset. Out-of-game, Mugen is a word of Japanese origin, meaning dream, fantasy, or infinite. It has been interpreted to mean "Without Limits." An Asian version of Siege Perilous, the idea behind shards with the special ruleset was to create a more "difficult" and challenging shard for UO veterans.

General

No Item Insurance.
No Trammel facet.
Felucca ruleset on all remaining facets (Ilshenar, Malas, etc.).
Each player can use a Personal Bless Deed on but one item.
Character Transfer is prohibited to and from Mugen.
Murderers and criminals cannot kick/ban others from their home, nor can they log out instantly.
The title “Murderer” has been done away with, murderers will now show their karma/fame title.

Skills & Stats

Skill gain:
- Skill points for skills under 70 points gain as normal shards;
- Skill points for skills between 70 and 79.9 points gain a maximum of 3.6 points total per day, with a minimum of 5 minutes between point gained;
- Skill points for skills between 80 and 98.9 points gain a maximum of 2 points total per day, with a minimum of 10 minutes between point gained; and
- Skill points for skills 99.0 points and up gain a maximum of 2 points total per day, with a minimum of 15 minutes between point gained.
Maximum of 6 stat point gains per day.
Decreased rate for SOS bottle spawn.
No treasure maps can be fished up.
Arms Lore gives a crafting bonus every 12.5 skill instead of 20, as on the regular shards.

Spells

No Recall or Sacred Journey spells.
The spells Blade Spirits and Energy Vortex have been weakened significantly.
Telekinesis does not work on trapped or locked chests.

Items

Musical instruments, fishing poles, herding crooks, scissors, axes used for lumberjacking, and other bladed objects wear down and break with use.
7th Anniversary Items are not blessed.

NPCs

Shopkeeper NPCs do not buy items from players.
Shopkeeper NPCs charge 3x more for the items they sell.
Shopkeeper NPCs do not sell any resources (Ingots, Cloth, etc.)).
Hireling NPCs charge 3x more for their services.
NPCs do not carry gold in their backpacks, which prevents it from being stolen or looted upon death.

Other Uses for Mugen

M.U.G.E.N. is also a freeware 2D fighting game engine that was originally released in July of 1999.
Mugen is also a character in the Japanese anime series Samurai Champloo.