Undine's Deep

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Rules and Gameplay

Embark on an enchanting underwater journey with Undine’s Deep, a slot game developed by Endorphina that captures the mythological tale of Undine, a water nymph. This game features a 5×3 reel grid with 10 paylines, offering players a magical experience beneath the waves. To win, players must align combinations of three or more matching symbols along a payline, starting from the leftmost reel. The game is designed with simplicity in mind, yet provides depth with hidden controls to declutter the screen, enhancing the immersive underwater theme. Betting options range from $0.01 to $100, catering to a wide array of players from casual to high rollers.

Bonus Features

Undine’s Deep is rich in bonus features that enhance gameplay and increase winning potential:

  • Free Spins: Triggered by landing three or more Undine scatter symbols, granting 15 free spins with a 3x multiplier applied to all wins during this round. Additional free spins can be retriggered.
  • Gamble Feature: After any win, players have the option to gamble their winnings in a double-or-nothing game where they must beat the dealer’s card.
  • Wild Symbol: The golden fish acts as a wild, substituting for any other symbol except the scatter, and doubles the win when part of a winning combination.

This combination of features provides a thrilling gaming experience, with the potential for significant rewards.


The symbols in Undine’s Deep are beautifully crafted to fit the underwater theme:

  • Wild Symbol: Golden Fish, doubles winnings when part of a winning combination.
  • Scatter Symbol: Undine herself, triggers the free spins bonus round.
  • Sea life symbols including Starfish, Sea Urchin, Jellyfish, Seahorse, and Shell.
  • Traditional card symbols (Ace, King, Queen, Jack, Ten, Nine) representing lower value symbols.

These symbols not only contribute to the game’s mythical ambiance but also to its potential for big wins.


The payout structure in Undine’s Deep rewards players for lining up matching symbols, with significant prizes available:

Symbol 5x 4x 3x
Starfish / Sea Urchin 7,500 750 100
Jellyfish 4,000 400 50
Seahorse / Shell 2,500 250 25

Additionally, wild substitutions can double the prize, and during the free spins round, a 3x multiplier is applied, significantly enhancing the payout potential.


Undine’s Deep is designed with 10 adjustable paylines, providing players with flexibility in how they choose to engage with the game. Players can select the number of paylines to be active during each spin, influencing both the wager amount and the chances of hitting winning combinations. This feature allows for strategic gameplay, appealing to both casual players and those seeking to maximize their winning potential.

Pros & Cons

Pros Cons
Engaging underwater theme based on European mythology. Variance not specified, which may affect player strategy.
Includes free spins with a 3x multiplier and a gamble feature. Control layout may not appeal to all players.
High-quality graphics and an immersive soundtrack. Limited information on jackpot and maximum win potential.

Minimum and Maximum Bet

The betting range in Undine’s Deep is designed to accommodate a wide variety of players, with minimum bets starting at $0.01 and maximum bets going up to $100 per spin. This flexible betting range makes it accessible for casual players looking to enjoy the game for fun, as well as high rollers seeking to place larger bets for potentially bigger wins.

About Provider

Undine’s Deep is a creation of Endorphina, a renowned gaming studio known for developing slots with captivating themes, innovative gameplay, and high-quality graphics. Since its release in 2014, Undine’s Deep has become a testament to Endorphina’s commitment to providing engaging gaming experiences. The provider has consistently demonstrated its ability to blend artistic design with technical excellence, making its games popular among players seeking immersive and rewarding online slot experiences.

How To Play

  • Start by loading Undine’s Deep at your chosen online casino.
  • Access the game’s menu by clicking the three lines to the left of the reels to explore your options.
  • Review the paytable and rules by selecting the appropriate option in the menu. Familiarize yourself with the symbols, paylines, and bonus features.
  • Adjust your bet by clicking on the bet option. You can choose your denomination and the number of coins per line.
  • Set up automatic spins if desired, specifying the number of spins and any limits for a hands-free experience.
  • Customize your gaming experience further by adjusting sound settings, changing the language, or enabling left-hand mode if available.
  • Begin playing by hitting the spin button on the right-hand side of the reels for manual spins, or drag the button to the center for autospins.
  • Monitor your balance, total bet, and active paylines displayed at the bottom of the screen throughout your gameplay.


Undine’s Deep by Endorphina is a beautifully crafted slot game that brings the mythological tale of a water nymph to life. With its engaging underwater theme, high-quality graphics, and immersive soundtrack, it offers a unique gaming experience. The inclusion of free spins with multipliers and a gamble feature adds exciting dimensions to gameplay, providing ample opportunities for big wins. Despite some limitations, such as unspecified variance and jackpot details, Undine’s Deep stands out for its artistic design and player-friendly mechanics. It’s a testament to Endorphina’s reputation for creating visually stunning and enjoyable slots, making it a must-try for fans of mythology-themed games.