Watch Fmovies. OKTAGON lets it rip for the first time in Karlovy Vary! Karlovy Vary will be shaken to its foundations like never before! On April 26, 2025, the OKTAGON circus will come for the first time with its unique sports show, its tamers and the famous MMA beasts in the cage that will shake Karlovy Vary to the core! In April 2025, OKTAGON MMA will travel to the west of the Czech Republic to present its MMA show.