Loot System is a simple and effective way of generating loot randomly. You can create any number of tiers of loot each with their own weighted probability.
Provides a simple and expandable system to assign values to the loot but you are also able to execute an additional script when a specific loot item is generated to perform additional tasks. The prime use of this script functionality is to randomize the values of the loot from a base value but other uses such as creating more loot or changing the music exist.
By introducing a bias into the random tier script it is possible to make rare occurrences more common over time or to have different enemies or containers containing either rarer or more common loot.