Heart of Tiki

Heart of Tiki is a video slot by BGaming that plays out on a 5×5 reel grid with 50 fixed paylines. Its theme is tropical and volcanic, with tiki totems, carved masks, lush jungle foliage and a rumbling volcano in the background creating an exotic island atmosphere. In the base game you get “Volcano Wilds” which can appear in random sizes ranging from 1×1 right up to 5×5, and more than one Wild of different size may land on a single spin. The Scatter symbols are sacred totems; landing three or more anywhere on the reels triggers the Free Spins round. Free Spins begin with six spins and include an Expanding Roaming Wild that starts as 1×1 and moves to a new position each spin; as you collect Scatters during the round the Wild grows up tiers (2×2, 3×3, 4×4, up to 5×5) and every three Scatters also grant extra spins. There is a Buy Bonus feature which allows you to instantly purchase access to Free Spins at a set cost (100× your stake), and the next spin after using it guarantees enough Scatters to trigger the bonus. You can also optionally activate Chance ×2, increasing your chances of triggering Free Spins naturally at the cost of slightly increasing your bet; this option is disabled if you use the Buy Bonus. The maximum win in Heart of Tiki reaches 5,000 times your stake.

You can play it for real money.