Diamonds Power: Hold and Win - the Rules, the Bolt's Two Jobs, Two BARs and Four Jackpots
Verdict first - the Royal Coins 2 board with its collector given a second job. Three reels, three rows, five lines, a diamond on each outer reel and a bolt in the middle to open the round. The same bolt pays diamonds on the spot in the base game. No return printed, no maximum printed, no volatility label - the return and the label sit in the studio's guide for operators, and the maximum there is a simulation figure with no unit. Stakes 0.20-100.00, no buy button, no ante. Two BAR symbols in two colours under one price, and they do not match each other. Every line below is read off the public demo's Game Info page on 6 November 2026 at the portal log's 1.00 stake, and that log checks it.
What this build shares with Royal Coins 2, and where it differs
My reference is Royal Coins 2, logged on royalcoinsslot.com. Same chassis. Three reels, three rows, five fixed lines, coins with printed values on the outer reels, a collector that lands on the middle reel only, three respins that refill, four jackpot tiers at 25x, 50x, 150x and 1,000x. Four differences, all on the screens. The collector here, called the Power Bonus, also pays in the base game - a bolt beside any diamond collects the diamond's value on that spin. The diamonds carry seven values, 1x to 15x with a 3x and a 7x among them, where the Royal Coins 2 coins carry five. The Diamond Pile sentence names a diamond as its trigger, where the Pile of Gold sentence on Royal Coins 2 names a coin or a crown. And the paytable carries two BAR symbols, red lettering and black lettering, under one price. The price ladder, the jackpot tiers and the respin rule read the same on both pages, on different pictures, and the odds behind the features are printed on neither.
The rules sit on one scrolling Game Info page, nine screens tall at our viewport, from the Diamonds Power Feature down to the version line.
How a spin pays
Five fixed lines, three rows and two diagonals, paying three of a kind from the leftmost reel, highest win per line only, lines summed. The paytable shows cash figures for the stake in play. Screens read at 1.00, the portal session's stake, so every cash figure below is a multiple too.
| Symbol | Three on a line at 1.00 | In multiples |
|---|---|---|
| 777 WILD | 50.00 | 50x |
| Bells | 30.00 | 30x |
| Dice | 20.00 | 20x |
| BAR, red letters | 16.00 | 16x |
| BAR, black letters | 16.00 | 16x |
| Hearts, green gems, purple spades | 4.00 each | 4x |
| Blue clubs | 1.00 | 1x |
The WILD stands in for all symbols but the diamond and the bolt. The smallest line is the stake itself, so no spin pays under what it cost. The two BARs are the catch. The screen shows both tiles under a single 16.00, and the reels treat them as two symbols. Three red pay, three black pay, a mix of the two pays nothing. Portal log, 2,738 paid spins. 19 mixed lines, nineteen zeros. Nine BAR lines of one colour or completed by a WILD, nine payments. Two log checks on the rest. Spin 546 lined hearts along the top and bells plus a WILD along the middle, 4.00 and 30.00, and took 34.00. Spin 191 had no line at all and took 32.00 through the bolt, which is the next section. Paytable confirmed.
One collector, two jobs
Diamonds land on reels 1 and 3 only and carry a value, seven everyday sizes, the smallest a single bet and the largest fifteen bets, with 2, 3, 5, 7 and 10 bets between, or one of the four jackpot values. The bolt lands on reel 2 only. Job one, in the base game. The screen calls it the Diamonds Power Feature. The bolt in combination with any diamond collects the values of every diamond on the reels, jackpot diamonds among them, and pays the sum with that spin. Job two, in the Bonus Game. The bolt sticks and keeps a running total, which the next section covers. Nothing on the screens prices either job.
The portal log shows 64 collections in 2,738 paid spins, call it one in 43, worth 484.00 together. Median 7.00, largest 32.00 on spin 191 - a 7.00 diamond and a MINI at 25.00 on reel 3 with the bolt in the centre. In practice the bolt and a diamond on one outer reel is a payment, and the bolt with diamonds on both outer reels is a round instead. None of the 64 collecting spins opened a round, and all 12 rounds opened without a collection. A bolt alone paid nothing - 416 spins in the log showed one with no diamond beside it. The sister log on diamondspowerslots.com reads the same way, 35 collections in 1,701 spins, largest 23.00.
The Bonus Game, respin by respin
The trigger, in the screen's words, is one Bonus symbol or more on every reel, which on this board means a diamond on reel 1, the bolt on reel 2 and a diamond on reel 3. Then three respins, with only diamonds and bolts landing. Every new symbol puts the count back to three, and the round ends when it reaches zero. Bolts stick on reel 2 for the whole round. Diamonds are collected by every bolt on the reel as they land - a diamond under one bolt is counted once, under two bolts twice, under three bolts three times - and then leave the board. When the round ends, the totals on all bolts are added to the Total Win. Jackpot diamonds land at random inside the round and are collected like any other, MINI 25.00, MINOR 50.00, MAJOR 150.00, GRAND 1000.00 at a 1.00 stake, scaled with the bet on the panel above the reels.
Portal log, 12 rounds, 144 respins, 144 diamonds worth 735.00, paid 971.00. Two rounds ended on a single bolt and paid their diamonds exactly, 64.00 and 68.00. The ten rounds with two or three bolts at the close paid 236.00 more than their diamonds. The largest round, on spin 2,515, had fifteen diamonds worth 130.00, a MINOR and a MINI among them, a second bolt on the third respin, bolts at 130.00 and 101.00 at the close and 231.00 paid in one credit. Longest round 21 respins on spin 1,415, 80.00. One rule tested against the record on every respin of all 18 logged rounds. Each bolt's total equals its previous total plus the diamonds that landed on that respin. Printed and observed agree.
The Diamond Pile
One sentence on the screen. Any diamond landing in the base game grants a chance of triggering the Diamond Pile Feature, which adds enough diamonds and bolts, or more than enough, to start the Bonus Game. No rate. Portal log, 4 of 12 rounds opened that way, all four from a board with one or two diamonds and no bolt, each time with a bolt and enough diamonds dropped in. Sister log, 2 of 6. The game's own record carries a count that climbs with diamonds on the board and resets when the pile fires, and the screens say nothing about it - unverified as a rule, reported as an observation in the review.
Printed, and left unprinted
What the page prints is the paytable, the diamond values, the trigger, the respin rule, the four jackpot tiers, the pile sentence, the payline diagrams, the malfunction clause and a version line, 1.26.0 on 6 November 2026. What it leaves out is a return figure, a volatility label, a maximum win, a round cap, any trigger rate, any pile rate, any jackpot odds, a release date. The return and the volatility stand in the guide Playson writes for operators, quoted in the review's source notes. The maximum there is a simulation figure with no unit, and the rest stand nowhere. The 1057x on the intro screen and the first rules screen is a drawn sum, and the review treats the 1,057x that databases quote as a maximum accordingly. The bet menu runs 0.20-100.00 in nineteen steps, default 1.00. No buy button, no ante, no extra bet. The spin button reads HOLD FOR TURBO. The archived screens of 26 May 2026 print the same text at version 0.12.1, same rules and a newer build number.
Quick answers
Do the diamonds pay in the base game?
Only when a bolt stands beside them on reel 2. Without the bolt the value is a picture.
Do three BARs always pay?
No. Three red or three black pay 16.00 at 1.00; a mixed line pays nothing, nineteen times out of nineteen in the portal log.
Is 1,057x the maximum win?
Not in the rules. The figure is the sum drawn on the intro screen, and no maximum or cap is printed anywhere. The studio's guide for operators prints 5150 as the largest payout observed over 50 billion simulated spins, with no unit beside the number. A record, not a cap, so the card keeps its maximum at Not verified.
What is the RTP?
Not printed on any screen, and none on the studio's public page. Four return settings stand in Playson's guide for operators, 90.00%, 92.66%, 94.66% and 95.66%, and the card carries the top one - which setting this demo runs is printed nowhere.
Can the Bonus Game be bought?
No. No buy button, no ante bet, no extra bet in this build.
On our shelf the demo's i button opens the whole page, and the page comes before any credits.
Known limits of this page
Known limits of this page: a public-demo reading at 1.00 on 6 November 2026 and the archive of 26 May 2026, nothing else. Return and volatility come from the studio's guide for operators and not from a screen. Maximum, trigger rate, pile rate and jackpot odds stay unverified, because none is printed and the guide's 5150 carries no unit. The pile's counter is an observation from the record, not a rule from the screen. Twelve rounds and 64 collections in the portal log price nothing. They check the arithmetic. The sister log on diamondspowerslots.com is included where stated, and the published run on diamondspowerplay.com has no log on file here and is not used.
Verified against
The base is session DPHW-20260728-01 - 2,738 paid spins at 1.00 on the evening of 28 July 2026, 12 rounds with 144 respins, four of them opened by the Diamond Pile, 64 base-game collections, checkpoints throughout, 94.78% at the close, 93.65% for the two-log pool. Public demo re-read on 6 November 2026. The 6.8 verdict, the frames and the tables sit in the Diamonds Power review, and the session report keeps each round's opening and closing balance. The build itself plays on the demo shelf. Our methodology page explains the logging. Not yet seen in any log - a MAJOR or GRAND diamond inside a round, and a bolt with jackpot diamonds to its left and right. 18+ in demo play as in any other.
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