From January 2021 many browsers will no longer support Flash technology and some games such as Monster Arena may not work.
Solutions are being studied to allow Flash games being playable again on browser. If your game doesn't work you can try one of the similar games on this page.
Monster ArenaAuthor : Little Giant World - 80 879 plays
In Monster Arena, train your monsters into masters of combat. Choose between Redzilla the dinosaur, Unihound the unicorn, or Cebolla the bird and develop their skills and special attacks at the monster academy. Compete in tournaments and prove to your opponents that your beast is the strongest! Get far enough in the game and unlock 2 brand new monsters.