Skills usually influence a character's chance to succeed by adding to the relevant attribute. In some games (such as "GURPS"), each skill has a specific base attribute to which it is always added; in others (such as "Ars Magica"), a skill can be added to different attributes depending on how the skill is being used. Some games (such as "Feng Shui") add the base attribute to the skill at character creation time; after that, it is independent of the attribute and is used instead of the attribute rather than adding to it. Most games have a fixed penalty for attempting a task without a relevant skill; older editions of "Shadowrun" gave a complex network of penalties for using similar skills (such as attempting to pick an electronic lock by using the Computer skill instead of the Electronics skill). The text-based roleplaying game "" is noted for being the first text based multi user role-playing game to offer a developed profession and skills system . Choosing a profession then conveyed a bank of general skills and guild specific ones each containing a ladder of skills which could be invested in via lessons earned through on-line play. Initially there were around 30 such skills with approximately 17 abilities in each covering a wide range from Riding, Perception, Thievery or Demonology. As of 2015 Avalon possesses 66 Skills with a staggering 2194 distinct abilities developed over its 26-year tenure.