As the title suggests, game playing is key to Macarena García Lenzi and Martín Blousson’s Rock, Paper and Scissors (Piedra, papel y tijera), from a screenplay by the directors and their co-writers Julieta García Lenzi and Valentín Javier Diment (The Rotten Link). In a multi-storey house in contemporary Argentina, María José (Valeria Giorcelli) and her…