In the multi-agent systems community, dependence theory and game theory are often presented as two alternative perspectives on the analysis of social interaction. Up till now no research has been done relating these two approaches. The unification presented provides dependence theory with the sort of mathematical foundations which still lacks, and shows how game theory can incorporate dependence-theoretic considerations in a fully formal manner. Categories and Subject Descriptors I.2.11 [Artificial Intelligence]: Distributed Artificial Intelligence--Multiagent Systems General Terms Economics, Theory Keywords Dependence theory, Game theory