Quantum strategy in moving frames

We investigate quantum strategy in moving frames by considering Prisoner's Dilemma and propose four thresholds of $\gamma$ for two players to determine their \textit{Nash Equilibria}. Specially, an interesting phenomenon appears in relativistic situation that the quantum feature of the game would be enhanced and diminished for different players whose particle's initial spin direction are respectively parallel and antiparallel to his/her movement direction, that is, for the former the quantum feature of the game is enhanced while for the latter the quantum feature would be diminished. Thus a classical latter could still maintain his/her strictly dominant strategy (classical strategy) even if the game itself is highly entangled.