The paper considered possible way of implementations of classical cooperative games with transferable utility. This way is based on the assumption, that the utility of coalitions (the value of the characteristic function of the game) are stochastic values. The given class of games is offered to be called stochastic cooperative games. The main attention is placed on possible approaches to the definition of superadditivity for stochastic cooperative games. Also was considered the possible approaches to the definition of concept of imputations and core for stochastic cooperative games. One of the possible areas of practical using of stochastic cooperative games are economic researches of the processes of large investment project, including projects with international participation.