In games where multiple characters are disallowed, enforcement of this restriction can be difficult, especially without specialized tools.
Most typical rules include the following: The term multi is a similar idea in that it is heard in a wider variety of genres, such as strategy games where players control something other than a character.
Multi denotes the use of an alternate account to the advantage of the primary character, which many games consider cheating.
Multis allow a player to explore more possibilities than he could with only his main character alone; for example, many role-playing games have classes (such as Fighter and Wizard) that restrict the gameplay (fighters cannot cast spells, for example), and a player may want to create several characters to explore all of the possibilities.
This type of smuggling is a one-way venture, as characters cannot make the return trip from Lord of Destruction to the 'classic version'.
The use of mules in this manner circumvents the intended inability of characters to move freely from one version to the other, and some players consider this a 'cheat'.
The use of mules in Eve Online is commonplace for a variety of reasons, one common purpose is to allow players whose main character is involved in piracy to transport and trade the spoils of their piracy in high security trading systems, where the pirate character cannot legally venture.
Characters used to create items in World of Warcraft however can't reach beyond a certain crafting skill level until their character level is increased; in Lord of the Rings online the most sophisticated recipes are limited to players who are able to earn faction reputation in end game areas only.