“Sex Education” star Asa Butterfield and “Stranger Things” actress Natalia Dyer will star together in “All Fun and Games,” a high concept horror thriller produced by the Russo Brothers’ AGBO and producer and financier Anton. Ari Costa, who worked on both “Extraction” and “Avengers: Endgame,” will co-direct “All Fun and Games” with Eren Celeboglu in their directorial debut.