It was later converted to d20 Modern rules and published as a stand-alone book in In the setting, the Hoffmann Institute is an organization which investigates strange creatures and phenomena. The players take on the roles of members of this organization, and delve into the supernatural and mysterious. The premise of the game is that nearly every strange or supernatural story ever widely told is true, but a web of conspiracies and secret organizations hide this truth from the average person. The original book was hardbound with pages illustrated in color. Highlights include:.

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Following the acquisition of TSR by Wizards of the Coast , the game was discontinued in as part of a broader rationalisation of TSR's business holdings, but it retains a small and devoted fanbase. Characters were created with a point-based system, and could be either humans, mutants, one of several alien species presented in the core books, or original aliens created by the GM. Classes were replaced by professions, which dictated what skills and abilities were cheaper for any given hero to get, though a few skills in particular, psionics were restricted to specific professions.

Skills are classified into broad and speciality skills. Earning a specialty skill requires an associated broad skill, which requires a character to have sufficient associated ability points.

Special skill is further classified into ranks, which affects the skill's scores. Skill scores are presented with the full score, half that score, and one-quarter that score.

Unlike many other systems, actions are determined by a control die and situation dice. When Gamemaster calls for a roll, player rolls 1 control die and 1 situation die.

The control die is always a sided die, while situation die can be a 0, 4, 6, 8, 12, sided die, where 0-sided die means the action only depends on control die roll. Situation die can be plus die or a minus die, in which the value in the situation die is added to or subtracted from control die value.

The total of the rolled numbers is checked against character's action, skill, feat, to indicate a success or a failure. Rolling low is always better for successfully completing an action. The type of situation die being used depends on the difficulty of the action. A minus situation bonus means player uses a larger negative situation die set, while a plus situation penalty means a player uses a larger positive situation die set.

In an action round, a round is divided into 4 phases. Each phase relates to one of the degrees of success that are achievable on an action check: Amazing, Good, Ordinary, and Marginal, in order from the first phase to the last. A hero can attempt only 1 action per phase.

Acting orders of characters are determined by a d20 die roll for all participants, which determines the earliest phase in which a character can act. All actions in a phase are considered to occur simultaneously, with the results of those actions being applied at the end of the phase.

A character can act in as many phases as it has actions per round. Depending on how far below the skill score the player rolled, there are 3 progressively better layers of success and 2 levels of failure. An action is determined using this same system, making the game very uniform. Only armor rolls and damage rolls did not use the d Life points, called 'Durability', are categorized into Stun, Wound, Mortal. Stun damage can immobilize a character, but not life-threatening; wound damage can immobilize a character and inflicts 1 stun damage point for every 2 wound damage points received; mortal damage can kill a character, and inflicts 1 wound damage point for every 2 mortal damage points received.

Durabilities can be repaired by healing, or:. Designed to be a generic rule set around which a campaign world could be built, it was not very heavily marketed and suffered from mediocre sales which, along with increased focus on the d20 system, led to the discontinuation of the game in Much of the content of the Alternity game has been absorbed into the d20 Modern role-playing game.

Alternity uses four, six, eight, twelve, and twenty-sided dice, but does not use the popular ten-sided die, perhaps to help distinguish it from the competing World of Darkness and the Trinity role-playing game, published by White Wolf Game Studio.

The probability curve created by the addition or subtraction of a d20 and another die is shaped like a plateau, with two straight lines on both ends of the flat region. This is intermediate between the totally flat probability curve rolled by rolling a sided die and the bell-shaped curve produced by die pool systems.

Several books were published under the Alternity banner as core products, accessories, or under specific campaign settings. These products were not tied to any of the official campaign settings but could be used with them.

In addition to the general Alternity line of products, four campaign settings were published, each with their own books:. From Wikipedia, the free encyclopedia. This article is about the role-playing game.

For the Transformers toyline, see Transformers: Alternity. Wizards of the Coast. Archived from the original on Retrieved Mongoose Publishing.

Role-playing game systems. Categories : Alternity Role-playing game systems Role-playing games introduced in Hidden categories: All articles with unsourced statements Articles with unsourced statements from August Namespaces Article Talk. Views Read Edit View history. Contribute Help Community portal Recent changes Upload file. By using this site, you agree to the Terms of Use and Privacy Policy.

Alternity introductory boxed set. Bill Slavicsek , Richard Baker.


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