Noir Prism: steer a moonbeam across a jeweller’s table

Hunched over a velvet cushion, hammer and chisel raised, a jeweller with a mop of black curls and a silver bow strikes, and a diamond flares blue under the blow. That poster is a good summary of Noir Prism: patient, precise work in a dark atelier, with a single moment of light that decides everything. The game swaps reels for a table of 36 crystal tiles and a beam of moonlight, and the Noir Prism demo here lets you play it free, with virtual credits, no download and no sign-up.

The table and the moonbeam

Press Cut and the tiles turn over. Each settles as a gem, a mirror, a prism, a rough diamond, a loupe or plain velvet. Along the far side, six settings reveal their multipliers, shuffled before every cut: ×1, ×2, ×3, ×5 or ×10. Then the moon lens picks a row and fires.

The beam travels in a straight line. A mirror turns it by 90 degrees; a prism splits it in two, up to eight beams in all. Every beam runs on until it leaves the table by one of its edges. Watching a single shot fan out across the board is the pleasure of the thing.

How gems pay

Each beam pays on its own. Three or more identical gems lit by the same beam pay the prize for three, four, five or six and over, and different gem groups on one beam add up. The gems run from black diamond through ruby, sapphire, padparadscha, garnet, amethyst and citrine to moonstone. The Brilliant is the wild, counting as every gem on its beam, and three or more Brilliants on their own pay as black diamonds. A beam that exits through one of the settings on the far side has its win multiplied by that setting; a beam that leaves by another edge stays at ×1.

The Cut gauge and the Night of Prisms

Every rough diamond touched by a beam cuts one facet on the gauge called the Cut. The gauge keeps its facets from one cut to the next, and each bet level has its own. The fourth facet opens the Night of Prisms; so do three loupes lit in a single cut. The Night gives 8 free cuts with two lenses firing each time. Mirrors and prisms touched by a beam stay where they are until the end, so the board gradually becomes a network of fixed paths. The settings start doubled and double again every time a beam leaves through them, up to ×64. Three lit loupes add three free cuts, with a limit of 30 in all. The maximum win is 5,000× the bet per paid cut.

Testing it with virtual credits

Play fifty cuts at a small stake, about 20p, and follow the beam each time rather than the balance; you will soon learn to read where a mirror is likely to send it. Watch the Cut gauge fill, and remember that changing your bet switches to a different gauge. Then buy the Night of Prisms, priced at 65× the bet, three or four times in demo credits and see how the doubling settings behave once a few paths are locked in.

Noir Prism is a Nocturn Play game and runs smoothly on phones. Each cut is decided when the bet is placed; the animation only shows it. The same game runs for real money at the casinos below.