Royal Hold Diamonds: Crystal Portal by BePlay puts diamonds and crowns on a compact 3×3 board, with treasure waiting beyond its crystal portals. Ordinary spins lead toward Hold and Win rather than paying through lines. The central idea is to build a held-symbol board, then let Crown Portals open separate opportunities to collect prizes.
Quick take: A small diamond board leads into independent Portal rounds, giving each Crown a purpose beyond the main grid.
Theme and Gameplay
The diamond-and-crown setting fits a game built around filling spaces with treasure. On ordinary spins, the middle row deserves particular attention: three Diamond-type symbols across that row trigger Hold and Win. Symbols elsewhere do not form conventional payline payouts, so reading the trigger row matters more than tracing matching combinations around the board.
That gives the base game a focused rhythm. The main event begins when the qualifying row arrives, and attention shifts from the trigger to the spaces still available for new symbols.
Slot Features
Hold and Win begins with three respins. New symbols reset the counter, extending the opportunity to develop the board. Each addition therefore matters both for what it contributes and for the extra time it gives the remaining spaces.
Sticky Crown Portals open separate bonuses during resolution. Each Portal starts with an empty 3×3 grid and follows the same respin rules, but Crowns are excluded from these boards. Symbols do not transfer between the main grid and a Portal, so a well-developed main board does not give the next grid a head start. Multiple Crowns can lead to successive Portals.
Regular and Ultra bonus purchases offer direct entry with different starting Diamond combinations. The starting arrangement changes, while the appeal remains watching the held symbols build toward a completed board.
Feature focus: A Crown opens a fresh prize board: follow each Portal on its own, because the symbols already held on the main grid stay there.
RTP and Win Potential
The listed RTP is 96.1%, with medium volatility and an overall round limit of 1,000x the total bet. Filling the main grid awards 750x, while a full Portal awards the separate 200x Crystal Grand. Mystery Jackpots offer 10x, 25x or 75x. These are distinct prize targets within the overall cap; successive Portals do not remove that limit.
My Thoughts On This Slot
The strongest idea is making the Crown a doorway to another board. A fresh grid gives the feature a new point of interest, and keeping the grids independent makes each Portal easy to understand without carrying a collection of symbols between screens.
The tradeoff is the ordinary-spin rhythm. With no payline payouts, there is less appeal for someone who enjoys small matching-symbol results between bonuses. Royal Hold Diamonds: Crystal Portal is better suited to someone who enjoys respin counters, held prizes and the possibility of following one board with another.
Final Take: A focused Hold and Win game whose fresh Portal boards give the Crown its distinctive role.




