The gameplay was typical for all slots of that time. First, you need to set the denomination of one credit (the small Coin button on the right-side panel), then select the size of the bet per line (the Bet button) and the number of play lines (Line buttons with numbers indicating the selected amount). The total amount of your bet will be displayed in the Bet window. After that, you just have to press the Start button and wait for the spin result. Active lines are highlighted in different colours.

The received winnings, if any, can be transferred to the account by clicking Collect, or you can try to increase it in the game for doubling. To do this, click on the Double button. A face-down card will appear in front of you, and you have to guess its color - black or red - and press the corresponding button (in the Line row). If you're lucky, your winnings will double. If not, you will lose. The number of rounds is not limited.

Pressing the Help button opens the paytable and information about the possibilities of some symbols.

Dolphin's Pearl from Novoline is available in demo mode, completely free of charge. Dolphin's Pearl slot has a 95.13% return percentage, 5 spinning reels, 9 paylines. There is no bonus game, there are free spins, there is a Wild symbol, there is a Scatter symbol, and there is a multiplier. You can play Dolphin's Pearl slot machine in automatic mode, there is a "Fast spin" mode.

The bonus game starts when three or more scatter symbols appear on the screen and the image of a shell with a pearl. It means fifteen free spins for the player. During these spins, all the winnings received are tripled, and there is also a chance to get the same number of spins for which you will not need to pay.

Players will find a classic 2D slot with a minimalist design and a simple interface. It runs through a browser, so you won't be able to download the game to your computer.

If you like the theme of the Ocean World, have a look at these slots:

• Pearl Lagoon from Play’n GO - Pearl Lagoon is a five-reel video slot with three rows of symbols on the screen. You can play Pearl Lagoon slot machine on one to twenty lines. For each of them, a bet of one to five coins with a face value of one to twenty-five cents is accepted. So you can bet up to twenty-five dollars per spin. The video slot has a variety of functions, including special symbols, additional multipliers, free spins, risky game by chance, and more. The winning combinations of Pearl Lagoon video slot are formed from left to right, starting from the first reel. Symbols (from two or three) must be side by side on the active line. The winning depends on the bet you made on the line and the combination coefficient (up to x5000). Scatter is paid differently.

• Mermaid's Pearl – from Novoline, the slot with five reels and nine lines. The rules of the game allow you to bet from one to one hundred credits per line. The total rate reaches nine hundred credits. The slot has special symbols and allows you to compete for free spins with increased payouts. Payments are made by combinations on active lines, consisting of three (in some cases, two) or more identical symbols. They should be next to each other, starting from the first reel. The amount of the winnings can be calculated by multiplying the bet per line by the odds set for each combination. The maximum is x9000.