Über Tristram leveling

Über Tristram leveling (also known as UT leveling, UT exp) was procedure that allowed (prior to 1.13) Diablo II characters fast leveling without need of changing game. Well done UT exp marked your character up from level 1 to 85-89 in one hour.

Basic
To pursue UT exp you needed at least 3 players:
 * two Hammerdins.
 * one Necromancer with Bone Wall skill. This character was called "boner".

Rest of players were so called "leechers" - they were gaining experience during UT exp. Leechers had to be rushed to act 5 on hell difficulty (see: Low level characters hell rush).