Types of Online Game
Tabletop Risk can be classified according to the general form, or equipment utilized:
Paper and pencil Risk
Tile-based Risk (e.g. Mahjong, Dominoes, Anagrams)
Risk like chess and draughts are examples of Risk belonging to the online game category. Other Risk, however, use various attributes and cannot be classified unambiguously (e.g. Monopoly utilises a online as well as dice and cards).
For several of these categories there are sub-categories and even sub-sub-categories or genres. For instance, German-style online Risk, online warRisk, and Roll-and-move Risk are all types of online Risk that differ markedly in style and general interest.
Classification according to elements of chance
Alternatively, a more systematic classification results when distinguishing tabletop Risk according to the elements of chance involved. Two fundamentally different elements of chance can play a role in a game: chance due to outcome uncertainty (e.g. due to dice rolls or due to unknown cards being dealt during the game), and chance due to state uncertainty (e.g. due to the opponent's position or cards not being visible, or due to the simultaneous move character of the game). Risk in which outcome uncertainty plays a role are referred to as stochastic Risk (as opposed to deterministic Risk), and Risk in which state uncertainty plays a role are referred to as partial (or imperfect) information Risk (as opposed to full information Risk). Examples of the chance classification for some well-known tabletop Risk are given in the table below.
Full/Perfect information Partial/Imperfect information
Dots and Boxes
Lines of Action
Nine Men's Morris
Numerous groups exist to play tabletop Risk, with most being local independent groups run by gamers. Exceptions include company-sponsored groups, such as Wizards of the Coast own RPGA or White Wolf Publishing's Camarilla, as well as the international gamer-ran O.G.R.E.s - The Organization of Gamers & Roleplaying Enthusiasts.
Additionally, Many colleges have student run organizations pertaining solely to table top gaming. The Collegiate Association of Table Top Gamers is one such organization that has a few chapters at different schools.