Play 3 Wonders - Underworld Kingdom for Free

This fabulous looking game uses highly detailed symbols across the 5x4 grid. Jewelled playing card suits, green crystals, and the fossilized head of a T-Rex are among them. You’ll also encounter a live tyrannosaur, along with a flying pterosaur and the young explorer herself.

Play the 3 Wonders - Underworld Kingdom slot online and red, blue, or purple bonus coins can land at any time, ready for collection by the matching stone idols to the side. A jungle setting, filled with animated flocks of birds, and the ruins of a lost city add to the sense of adventure.

The quest plays out at our picks of the top desktop and mobile online casino sites with Boomerang Studios games.

This is a medium volatility game with a return to players of 95.53%. You can play with stakes from 0.50 to 50.00, winning these portions of the bet as symbols match from the left over any of 50 paylines –

Our brave explorer is a wild symbol who can step in and save the day by acting as all but treasure maps and coins when possible. If she lands only partly in view, the wild nudges up of down until she fills all four rows, making her job of creating new wins even easier.

Coins unlock the main 3 Wonders - Underworld Kingdom online slot bonus features. One, two, or all three idols can award their features at the same time, but all occur randomly. You get three respins with only coins, treasure maps, or blanks with anything other than blanks locking in place and resetting the spin counter.

Maps always hold values of 0.2x, 0.4x, 1x, 1.4x, 2x, 2.4x, 5x, or 10x the bet. Depending on which idol awards the round, coin values vary –

• Coins Upgrade Feature – These pay the same as maps, but also upgrade all surrounding coins and themselves by 0.1x, 0.2x, or 0.4x.

• Blue Coins Big Prize Feature – Blue coins hold values of 3x, 4x, 5x, 6x, 8x, or 10x the total bet.

• Red Coin Collect Feature – When red coins land, they gather all other prizes in view but leave them in place for further collections. If more than one lands at once, each gather in all other coin values.

Remember, any one, two, or even all three features can trigger at once, so you could get upgrades, big value coins, and collections all working together. Fill the grid by the end of any 3 Wonders - Underworld Kingdom slot machine feature for a bonus of 250x on top of any other wins.

A legendary character stars in the Tomb Raider Secret of the Sword slot machine by Games Global while the Indiana Janes slot from RTG also showcases a brave young woman seeking lost treasures.

High-end graphics, a thrilling topic and the chance to land any combination of bonus rounds are among the attractions of the 3 Wonders - Underworld Kingdom slot machine. Nudging wilds can be a big help in the base spins, but you’ll really want to trigger respins to take dinosaur-sized bites out of the game.

Once they begin, you can gather in coin prizes, upgrade their values, collect them over and over, or even enjoy all three features at the same time. Play 3 Wonders - Underworld Kingdom for free on this page, then unlock the lost features as you spin the reels at our favorite casinos online.