Enter Casino is a Playtech powered casino operated by Party Gaming Plc. The casino has over 90 games, huge progressive jackpots and a huge sign up. HOW OLD DO I HAVE TO BE TO ENTER THE CASINO? You must be at least 18 years of age to visit The Hippodrome Casino and this includes Heliot. Whether you are a complete casino newbie or have a few sessions under your belt, there are still a few things you should know about casinos.