3 Wonders - Underworld Kingdom

3 Wonders - Underworld Kingdom

Welcome to Underworld Kingdom Video Slot. It has 5 reels, 4 rows, and following features:

KINGDOM WILD NUDGE

HOLD & RESPIN FEATURE

The average theoretical return to player (RTP) is: 94.33%

RULES

WILD

WILD substitutes for all symbols except COINS and MAP.

KINGDOM WILD NUDGE

When partial 1x4 WILD symbol appears, it nudges up or down to cover the entire reel.

COINS

Each COIN may trigger the feature on the idol which matches the COIN symbol’s colour.

MAP

MAP symbol during Hold & Respin feature awards between 10 and 500 credits.

HOLD & RESPIN FEATURE

RED COIN, BLUE COIN, and PURPLE COIN are COIN symbols.

One or more COIN symbols may trigger the Hold and Respin feature.

3 Respins are awarded.

Hold and Respins starts with empty reels.

Only MAP and triggering COIN(s) matching active feature(s) appear during the Hold and Respin feature.

All MAPS and COINS are held and other positions respun.

If another MAP or COIN appears, Respins reset to 3.

MAP prizes can be 10, 20, 50, 70, 100, 120, 250 or 500 credits.

Respins are completed if 0 Respins remain or all reel positions are filled with MAP and / or COIN symbols.

All MAP and COIN values are paid when Respins are complete.

If all positions are filled with symbols, then extra 250x is won and the Hold & Respin feature ends.

PURPLE and RED COINS do not affect other PURPLE and RED COINS that landed on the same spin.

PURPLE COIN

PURPLE COIN is the Upgrade feature.

When it lands it upgrades each surrounding held prize by 5, 10 or 20 credits and will reveal a prize for itself.

After upgrades it will reveal a prize for itself.

PURPLE COIN prizes can be 10, 20, 50, 70, 100, 120, 250 or 500 credits.

PURPLE COINS only upgrade surrounding symbols that have already revealed a prize.

“Surrounding” means in any position 1 space to the left, right, above, below, and diagonal to the referenced symbol (up to 8 positions total).

BLUE COIN

BLUE COIN is the Big Prize feature.

Prizes can be 150, 200, 300, 400 or 500 credits.

RED COIN

RED COIN is the Collect feature.

When it lands, it will collect all held prizes.

If more than one RED COIN appears on the same spin, they will collect equal values and will not collect each other's prize.

GAME RULES

Play 50 lines for 50 credits.

Payouts are made according to the paytable.

Highest win only on each line.

Wins on different lines are added.

All wins begin with the leftmost reel and pay left to right on consecutive reels.

WILD substitutes for all symbols except COINS and MAP.

WILD symbols appear on reel 2, 3 and 4 during base game only.

All wins with WILD substituting are x2.

Malfunction voids all pays and plays.

Last modification date: 3/4/2026