Epistemic games in modal logic: Joint actions, knowledge and preferences all together

We present in this work a sound and complete modal logic called EDLA (Epis-temic Dynamic Logic of Agency) integrating the concepts of joint action, prefer-ence and knowledge and enabling to reason about epistemic games in strategic form. We provide complexity results for EDLA. In the second part of the paper, we study in EDLA the epistemic and rationality conditions of some classical so-lution concepts like Nash equilibrium and Iterated Deletion of Strictly Dominated Strategies (IDSDS). In the last part of the paper we combine EDLAwith Dynamic Epistemic Logic (DEL) in order to model epistemic game dynamics.