Diamond Mine Megaways

Blueprint Gaming states 96.

43% for the reference build. Its official page also lists two variants, at 93% and 92. 01%, which an operator may deploy instead. The rate actually applied is shown in the game help page, reachable from the slot window, and it is worth checking before your first stake.

No.

The studio page mentions no purchase option for this title, and the Strike Gold round can only be obtained by landing four bonus symbols in the base game. That marks a clear difference with Blueprint's more recent Megaways releases, almost all of which offer an alternative stake guaranteeing free spins entry.

Up to 117,649, a maximum rather than a constant value.

The height of each reel is drawn on every spin, and the horizontal reel adds positions on top. The counter shown in the game therefore changes with each spin, sometimes by tens of thousands of ways between two consecutive rounds.

Specialist databases put the ceiling at 10,000 times the stake.

Blueprint Gaming does not publish that value on its official page, describing the unlimited bonus multiplier instead. Such a ceiling assumes a very long cascade sequence combined with an already high multiplier: it does not describe an ordinary session.

It scrolls above the six vertical reels and adds extra positions to the grid, which raises the number of ways available on the spin.

It can also carry scatter symbols, which then award additional free games when the bonus triggers. This is a Megaways signature, reproduced here without modification.

It is the mystery symbol of Diamond Mine.

Once the reels stop, it transforms into another symbol from the game, and every barrel present transforms into the same one. When several land together, the conversion can create a combination spanning all the reels at once, including the positions added by the horizontal reel.

Four bonus symbols, which Blueprint calls Strike Gold, open the round.

Specialist databases indicate twelve free games to start, increased by each additional scatter and by scatters landing on the horizontal reel. There is no paid shortcut: the bonus triggers only from the base game.

No.

Blueprint Gaming describes a rising, unlimited multiplier during the bonus round: it climbs on every win and does not fall back from one free game to the next. That accumulation is what gives the bonus its potential, and it is why long cascade sequences are worth more here than a single high-value hit.

Specialist databases rate it high.

The structure points the same way: wins concentrated in a bonus that is hard to reach, no bonus buy and a cumulative multiplier. In practice that calls for a bankroll sized to absorb long runs without a trigger, played at modest unit stakes.

Blueprint has extended the series since the 2018 original, notably with a Jackpot King version linked to its progressive jackpot network and several sequels.

Those titles have their own settings, their own RTP and their own features. This page describes the original Diamond Mine Megaways only, so check the name shown in the game window.

Yes.

Built in HTML5, it is listed by Blueprint Gaming as compatible with mobile, tablet and desktop. The grid stays readable in portrait despite the six reels and the horizontal reel, and the controls rearrange around the screen. No download is required: the game loads in the browser from the casino library.

Blueprint's official page gives a range of 0.

20 to 100. 00, expressed in pounds sterling with conversion according to the casino's currency. Operators remain free to narrow those bounds, particularly in markets where regulation caps the stake per spin. The real range appears in the game stake selector.