Head back to the stone age and hope for eruptions of coins in Volcanic Cash, a 5 reel, 20 payline video slot from Novomatic. Available to play on desktop, tablet and mobile devices, this cartoon style slot comes with a bonus feature that awards up to 25 free spins with extra wilds added on each free spin. Play from between 20p and £50 per spin.

The design of Volcanic Cash owes more than a little to a famous cartoon family from the town of Bedrock! Set against the backdrop of a volcano, the reels include lower value A to 10 playing cards, a dinosaur and egg and Mr and Mrs Caveman, both of whom award payouts of 20 times your stake if you land 5 on a payline.

The Volcanic Cash logo is the most rewarding of the standard symbols, paying 25 times your total bet if you land 5 in combination. The giant rock is the game’s wild, replacing everything apart from the scatter and also awarding payouts of up to 25 times your total stake.

The Volcano is the scatter – landing 3, 4 or 5 of them anywhere on the reels on the same spin pays 5 times your total stake as well as triggering the Free Spins feature and awarding 15, 20 or 25 free spins. Look out for the lava symbol which is an extra wild that is added during the feature.

1 extra lava wild is added to reels 2, 3 and 4 on each spin. The lava wild can land stacked to further help your winning chances. There are no scatters on show during the bonus feature so you won’t be able to re-trigger the free spins.

Design wise, Volcanic Cash is rather well done, especially for a Novomatic powered video slot – the cartoon style imagery works nicely and is ideal for the prehistoric theme. Despite its name, Volcanic Cash isn’t an especially volatile slot as the variance here is in the low to medium range.

Get lucky with the extra wilds in the free spins feature though and this stone age favourite can still spew out a decent flow of coins. If you the theme, Playtech’s The Flintstones is highly recommended.