Leonardo’s Code is a 5 reel, 25 payline slot that is powered by Novomatic. Playable from 50p to £100 per spin and available to play on desktop, mobile and tablet devices, the game in based on the universal scholar and comes with a superb Free Games feature where 1 chosen symbol expands to cover all positions on the reel(s) it appears on.

Visually, Leonardo’s Code is pretty good for a Novomatic title as it has an old and historical element to it – with the reels backed by antique, scroll-like paper, you have A, K, Q, J and 10 playing card symbols and some of Leonardo Da Vinci’s famous paintings and inventions. You have flying machines, paddle-propelled ships, the famous Vitruvian Man painting and the Mona Lisa – this is the most valuable symbol giving you 500 times your bet for 5 across a payline.

There’s also a crytex symbol which is a mechanic combination lock riddle – this is the wild symbol and also offers up to 500 times your stake for 5 on a payline. It substitutes for all other symbols with 3 or more triggering the Free Games feature.

Here you will get 10 free spins – 1 bonus symbol is then randomly selected to become the special symbol. When it appears during the free spins, it will expand to cover the entire reel. You can get multiple reels, up to 5, with the same expanded symbol in place. If you’re lucky, you can also win another 10 free spins taking your total to 20.

Leonardo’s Code may be pretty straightforward as it’s similar to many other Novomatic slots such as Book of Ra Deluxe, Lord of the Ocean and Red Lady. That’s not a bad thing as it’s highly volatile and can pay out pretty big if you crack the code and gain access to the Free Games feature.