Gem Blast by Endorphina: expanding Wild and re-spin guide

Gem Blast is a five-reel, three-row game with ten fixed paylines. Endorphina publishes a 96.06% RTP, medium-low volatility and a supplier stake reference of €0.10–€200. These values describe the product page checked on 8 October 2026. They are not evidence that a particular New Zealand-facing operator carries the title, uses the same certified build or offers an equivalent NZ-dollar range.

The rules have two details that deserve more attention than the gemstone theme. Winning lines can be read in both directions, and the star Wild can expand on reels two, three and four before triggering a re-spin. The provider says up to three re-spins can occur. A sensible review therefore separates the original result, each re-spin and any later Risk decision.

Published game profile

Field	Official product-page value
Grid	5×3
Paylines	10
Win directions	Left-to-right and right-to-left
RTP	96.06%
Volatility	Medium-low
Bet reference	€0.10–€200
Expanding Wild reels	2, 3 and 4
Re-spins	Up to 3

Keep this table as a dated reference. Once a game opens, compare its title, version, RTP, paytable, currency and stake controls with the live help. A mismatch should be documented rather than “corrected” by assuming the supplier page overrides the loaded software.

How both-ways lines work

Gem Blast does not use an all-ways grid. It still has ten defined line paths. The unusual part is that a qualifying sequence can start from the left edge or the right edge. That gives every numbered line two possible reading directions, but it does not make disconnected symbols or arbitrary clusters valid.

Open the line overlay and choose one simple result. Trace the highlighted positions from the relevant outer reel towards the middle. If a sequence appears to qualify from both directions, use the result panel and help wording to determine how the build settles it; do not count the same visible symbols twice by inspection alone. Only the recorded round award is authoritative.

The official symbol summary gives five sevens at 100× base bet, a bar combination at 50× and an orange crystal combination at 20×. “Base bet” is not necessarily the number a user informally calls the stake. Read its definition in help, because total bet, line bet and coin value can be related differently across interfaces.

Expanding star Wild and re-spins

The star substitutes for ordinary symbols and appears only on reels two, three and four. Endorphina says it expands over its reel and triggers a re-spin. This means the expanded reel should remain part of the visible feature state while the next result is generated, but the precise persistence sequence must be read from the current help.

For an audit, label the first settled view “trigger” and every subsequent event “re-spin 1”, “re-spin 2” and “re-spin 3”. Capture the grid, highlighted lines, award and balance movement for each stage. That prevents several animations from being treated as one enormous line win and makes it possible to see whether the feature stopped at the published ceiling.

An expanded Wild does not create a separate prize simply for filling a reel. Its value comes from substitution on valid payline positions. Check which numbered line it completed and which direction that line used. If the reel expands without forming a payable sequence, consult the rules rather than inventing a consolation award.

Risk Game is a separate decision

The provider lists a classic Risk Game. Its description allows a player to choose among cards; a winning choice can double the offered amount, while a losing comparison can end the feature with no Risk win. The product text also refers to increasing a win up to ten times through the sequence.

Risk does not retroactively change whether the original spin was correct. Reconcile the slot result first, then record every voluntary Risk choice on a separate row. If the goal is to understand the expanding Wild, decline Risk during the initial test so the balance movement remains easy to follow.

The option may be absent because of operator configuration or jurisdiction. Its appearance on Endorphina’s page does not guarantee that every account will see it. The same caution applies to demo access: a supplier demo is useful for reading controls, but it is not proof of local real-money availability.

RTP, volatility and stake context

The published 96.06% RTP is a long-run theoretical rate for the cited profile, not a promise for a session or a forecast of re-spins. A loaded version can carry a different approved configuration. Save the help screen showing the active value before relying on the supplier number.

Medium-low volatility is the studio’s descriptive category. It does not mean losses arrive gently, nor does it set a maximum session cost. Ten paylines, two reading directions and expanding Wilds can make the game feel active, but short-run outcomes remain unpredictable. Decide both a time boundary and an affordable loss limit before opening the game.

The €0.10–€200 range is denominated in euros. Do not present it as NZ$0.10–NZ$200. The account lobby determines currency, increments and actual limits. If the interface displays only coin units, record the conversion shown beside total stake before spinning.

Mobile and accessibility checks

On a phone, the critical information is not the size of the crystals. Confirm that all five reels, the total stake, balance, line highlight and re-spin counter remain visible at the same time. Test portrait and landscape orientation and ensure a screen zoom does not hide the help or close control.

Animation can make the expansion sequence difficult to follow. Use the normal-speed result history instead of relying on a screen recording alone. Reduced-motion settings should not remove the textual outcome. If symbols are distinguished mainly by colour, look for shape labels in the paytable so the red, blue and orange stones remain identifiable.

Evidence checklist for one feature chain

Record the game title and version, active RTP, total stake, currency, trigger round ID and timestamp. For every stage note the Wild reel, line number, reading direction, award and balance after settlement. If Risk is entered, create a new section with the offered amount and each decision.

Three common mistakes are easy to avoid: treating the layout as all-ways, counting a line in both directions without support, and combining the optional Risk outcome with the slot’s return. A fourth is assuming that a studio jurisdiction list proves operator access in New Zealand. Only a locally accessible, authenticated lobby can establish that.

Final assessment

Worked method for a three-stage re-spin audit

Suppose the star lands on reel three and expands. Start the record with the original paid-round identifier, total debit and balance before settlement. Draw the ten-line overlay or save it from help, then list only the routes that use reel three. This limits the check to lines the expanded star can actually affect.

For the first re-spin, write down whether the expanded reel remains filled, whether another star appears and which line directions are highlighted. Repeat for the second and third re-spins if they occur. A separate cumulative-credit column prevents a payout shown at the end of the chain from being added again to awards already counted during individual stages.

If a second star lands on another eligible reel, do not assume that the maximum number of re-spins restarts. Look at the on-screen counter and the current rules. The provider’s “up to three” description supplies a ceiling for the cited profile but does not explain every sequencing edge case. The deployed help and history resolve whether a new expansion extends, replaces or merely participates in the remaining event.

Close the audit by comparing the final balance change with the paid stake, total slot credit and any later Risk movement. A discrepancy should be reported with the round ID and chronological images, not with an estimate based on the animation. This method also reveals whether a line was read from the right when a left-originating sequence looked incomplete.

Questions the help screen should answer

Before relying on a result, the help should make five items discoverable: the ten numbered paths, the definition of base bet, the two permitted line directions, the reels where the star may appear, and the re-spin persistence rule. It should also identify the Risk option separately from the base game.

If one of those items is missing, use the result history and contact authenticated operator support. Ask a narrow question—such as whether an expanded star remains active for the complete re-spin chain—rather than requesting a general explanation of the game. A precise question is easier to answer and creates a useful written record.

Gem Blast is a compact line game with a clear verification task. Ten paths are read from either side, while the central-reel star can expand and initiate a short sequence of re-spins. The official page supports the grid, line count, RTP, volatility, euro reference range, Wild positions and Risk feature.

The active game help remains decisive for the deployed RTP, base-bet definition, persistence behaviour and availability. A useful review should preserve those details instead of turning colourful effects into unsupported claims.

Official and related sources

• Gem Blast official product page
• Endorphina catalogue guide
• Responsible gambling guide
• Corrections policy

How to verify the version you can actually open

A provider page proves that a title exists and describes the supplier's intended rules. It does not prove that a casino accepts players in New Zealand, that the title is enabled for a particular account, or that the highest published RTP is the version in the lobby. Treat availability, operator eligibility and product configuration as three separate checks.

Start with identity, then configuration

Open the game only through the authenticated casino lobby. The information or help panel should identify Endorphina, the exact title and the active mathematical return. Compare the reel or grid layout, paylines or cluster rules, named features and symbol behaviour with the official product material. Similar artwork or a matching title is not enough when the help file is missing or inconsistent.

When the supplier publishes several RTP values, report all of them as configurations. Do not assume the highest option is deployed. RTP is a theoretical long-run measure across a very large number of rounds; it is not a refund rate for one player and cannot predict the next result. Volatility is different: it describes how unevenly results are distributed on the provider's scale.

Read stake controls as money, not interface decoration

Provider sheets often quote a reference range in euros. That range does not establish New Zealand-dollar support or the limits in a specific account. Before a paid round, identify the total amount that will leave the balance. If the interface separates denomination, coins and lines, verify the combined total. If Extra Bet is active, calculate its full cost before pressing spin.

Feature-buy prices are multiples of the current bet, not promised returns. A 100x purchase at a $1 stake costs $100; at a $2 stake it costs $200. Availability can vary by market and some mathematical configurations may not support the control. If the live help does not explain the price, delivered feature and active RTP, leave the option unused.

Keep simulation figures in their proper scope

A game sheet may publish a maximum result observed in a large simulation. That is not automatically the contractual maximum payout and never describes a likely session. Preserve the provider's wording, sample size and configuration. Check the live rules for a binding cap and the operator terms for any separate payout limit. Do not turn an extreme result into a promotional headline.

Audit a disputed round

If an animation freezes or a connection drops, do not repeat the wager immediately. Reopen the game through the authenticated lobby and inspect round history. Record the time, total stake, balance movement and round identifier. The result can be settled by the gaming system even when the device never displays the final animation. Send evidence through verified operator support; never disclose a password, recovery phrase or one-time code.

Read the paytable as a calculation document

The paytable should explain what creates a win, which symbols substitute, where special symbols can land and how multiple awards combine. For line games, confirm direction and active paylines. For cluster games, confirm adjacency, minimum group size and the order of collection. For respins, identify what remains locked, what resets the counter and what ends the feature. A graphic effect can illustrate those rules but cannot replace them.

Separate addition from multiplication. Several prize values may be added before a multiplier applies, while reel-specific multipliers can sometimes multiply together only when each reel participates in the same win. Reconstruct one low-stake result from game history. If the arithmetic cannot be matched to the help file, stop and ask the operator rather than guessing.

Do not confuse hit frequency with a profitable round

Provider sheets can publish hit frequency or category probabilities. A hit simply means a round returned a qualifying amount; it can be smaller than the stake. “Big”, “Mega” or “Epic” thresholds are provider reporting categories, not promises. They are useful for comparing mathematical versions only when definitions and samples are the same.

Random outcomes do not become due after a long gap. A feature that appeared repeatedly in a demo or marketing clip has no obligation to repeat in a funded session. Previous rounds do not create a debt from the next random result.

Confirm market and device behaviour independently

A title can exist in the supplier catalogue while an operator disables it for a territory, currency, device or bonus. Language localisation is not evidence of legal availability. Confirm the operator's identity, accepted countries and current lobby separately from the provider review.

On mobile, verify that balance, total bet, feature state and help remain visible without overlap. On desktop, check that browser zoom does not hide a purchase control or change the apparent denomination. Mathematical configuration should not change merely because the screen changes; if the help shows another RTP, treat it as a different deployment and record it.

Keep a compact evidence record

For any fact used in a review, save the title, provider, official URL, document date when available, access date and exact territorial scope. For a live session, add the operator domain, Game ID, RTP, currency and a non-sensitive screenshot of the help panel. This makes later corrections possible when a supplier updates a sheet or an operator changes configuration.

Missing information should remain missing. Do not estimate an RTP from results, convert a euro reference range into an operator's NZD limit, or treat another casino's configuration as evidence. A transparent “not confirmed” is more useful than a precise-looking number without the correct source.

Use limits that survive the feature design

Collection meters, expanding grids, sticky symbols and near misses can make a session feel unfinished. Unless the rules explicitly preserve progress, the visible state has no value after the round or feature ends. Set a money limit and time limit before launch, count feature buys immediately, and stop at the limit even when a meter appears close to an upgrade.

No random game is an income plan. Do not borrow, use essential funds or raise the stake to recover a loss. If play stops feeling recreational, use timeout, deposit-limit or self-exclusion tools and consult the site's responsible gambling guide.