In light of what others have said already, I think you need to clarify your question. What do you mean by 'the basic theory to play within a multiplayer'?

Many different versions of classic dice games can be found at casinos, but the basic concept remains the same: players bet on the outcome of a pair of dice. Unlike physical casino, online casinos use a provably fair random number generator instead of dice. It is also possible to play multiplayer versions, in which players compete against each other, but the specific concept of each game will vary.