Crystal Waters Slot by RealTime Gaming

A 2015 RTG underwater slot that still shows up at Cherry Jackpot, RedDog, and most of the RTG-powered casino skins. The art is pure mid-2010s cartoon - hand-drawn palm island on the horizon, waving seaweed and coral gardens at the base of the grid, cheerful blue-crystalline card royals with small bubbles drifting past each symbol. It looks like a family-friendly aquarium screensaver, which dates it, but the feature math is more interesting than the visuals suggest.

The Dolphin wild only lands on reels 2 and 4. When it helps finish a payline, the win doubles automatically - a built-in 2x that applies on every paid spin and every free spin. Three Yachts anywhere trigger 15 free spins, and another three during the feature retrigger for 15 more. No published cap on retriggers. The Yacht scatter also pays in its own right, multiplying total bet whenever two or more land regardless of position.

Free spins are where the Bonus Fish activates on reel 3. That single symbol replaces one of the standard icons during the feature and substitutes for everything except the Yacht. When it completes a combo, it rolls a random 2x, 4x, or 8x multiplier. Stack a Dolphin on reel 2, a Bonus Fish on reel 3, and the math compounds - 2x times 8x equals 16x, which is the hard ceiling for a single payline payout. Any combination without both wilds caps lower.

Sea Turtle tops the regular paytable at 2,000x line bet for five of a kind. School of tropical tangs pays 1,250x. Seahorse and seashell sit at 100x, card royals fill the lower tiers. There's also a random progressive tied to RTG's platform-wide JACKPOTSTRIKE pool - the counter sits in the top-right corner showing whatever value the network currently holds, and it can fire on any paid spin regardless of reel outcome. You'll see the same jackpot pool across other RTG titles at the same casino. If the aquatic setting works for you, Seahorse Surge is the newer RTG take on similar waters with a different bonus structure.