Monster frequency

The term monster frequency refers to a number which can technically range 0-7 (though 6 and 7 are not used) used internally to determine how frequently a monster is generated; it can be thought of as a relative probability that a particular monster will be selected.

When a monster is randomly being selected, the game will tally all of the monsters with a difficulty from one-sixth that of the current level's difficulty to the average of the level's difficulty of the player level, sum their frequencies , generate a random number, and subtract the frequencies of successive monsters from this random number until zero is reached - the current monster is then selected.