108 Heroes is a traditional line slot framed by a broad Asian-inspired heroic setting, not a retelling assigned here to one specific country. Its rules are more straightforward than its title suggests: a logo Wild substitutes for most symbols, three or more Scatters open a ten-spin round with a 3x multiplier, and three or more Treasure Chests lead to a separate prize-selection bonus. The value of the design lies in that two-route structure—one bonus extends ordinary reel play, while the other pauses it for a pick.
108 Heroes at a glance
| Provider | Microgaming |
|---|---|
| Genre / theme | Asian |
| Game type | Video slot |
| Reels / grid | 5 reels; row count not stated in the observed sources |
| Reference RTP | 96.56% |
| Volatility | Low |
| Payout mechanic | 15 paylines |
| Release date | 6 July 2017 |
| Main features | Three or more Scatters award ten retriggerable Free Spins with all wins tripled; three or more Treasure Chests start a separate pick from 12 prizes. |
RTP and stake limits can vary by version and market. Check the information screen in the game you open. Maximum win is a ceiling, not an expected result.
Fifteen paylines and two feature symbols
The exact-title review lists five reels and 15 paylines. Regular line wins use the game’s themed hero and card-rank symbols, while the logo serves as a Wild that substitutes for other reel symbols except the Scatter. The observed sources do not confirm a row count or provide enough rules to reconstruct every symbol payout, so those details are not inferred. The dependable distinction is between the ordinary line combinations and the two special-symbol routes.
The outdoor-scene Scatter and Treasure Chest do different work. Three or more Scatters trigger Free Spins; three or more chests open Pick a Chest. This means the bonus design is not one feature with two visual triggers: one mode supplies additional spins and a multiplier, while the other gives a selection among prizes. The broad setting can remain atmospheric without claiming that the game represents a specific nation or historical account.
Free Spins multiply and can retrigger
Landing at least three Scatter symbols awards ten Free Spins. All wins in those spins are subject to a 3x multiplier, and another qualifying Scatter appearance can retrigger the feature. The review describes the Scatter as the serene outdoor scene, not a symbol that must appear on a particular payline. This makes bonus entry independent of the 15 regular paylines: Scatters can activate the round even when they do not form a line combination.
The 3x applies to wins during the Free Spins feature, which makes the bonus’s scope broader than a Wild that only substitutes in a particular line combination. The reviewed feature notes do not establish how the multiplier interacts with a Wild that also completes a win, so no stacking rule is asserted beyond the separate 3x bonus condition. Retriggers add another set of spins, but the source does not provide a maximum total duration; the feature should be understood as extendable, not endless or guaranteed to retrigger.
Pick a Chest is a separate pause in play
Three or more Treasure Chest symbols trigger a Pick a Chest bonus. The exact-title review describes 12 possible prizes and lets the player select a few of them. The source does not explain the complete prize distribution, number of selections for each trigger, or whether a particular chest guarantees a specific prize. The feature can therefore be described as a choice among twelve possible rewards, but not as a fully predictable prize ladder.
The contrast with Free Spins gives each special symbol a clear identity. Scatters grant a fixed initial count with a 3x multiplier and retrigger possibility; chests take the player to a separate selection screen. This variety is useful in a classic line format, although the chest feature is difficult to evaluate numerically without the selection and prize details. No cash jackpot value is transformed into a multiplier maximum, and no unsupported payout tier is supplied.
Official configuration and limits
Microgaming lists 96.56% RTP, Low volatility and a release date of 6 July 2017. The exact-title review agrees on the RTP and labels the theme more specifically, but the editorial classification here remains the broader Asian genre requested for this card. The official page gives a cash-denominated maximum exposure; the multiplier maximum remains unknown because the sources do not express it as times stake.
The game’s strength is its accessible split between a recurring-spin bonus and a separate pick feature, with the Wild and Scatter rules easy to distinguish. Its weakness is the limited transparency around Pick a Chest: without knowing how many selections a trigger grants or how prizes are distributed, the feature’s expected value cannot be assessed. Low volatility is the official label, not a promise of steady outcomes on an individual session. Players who want classic lines with two different bonus interruptions may appreciate the variety; those looking for a feature with fully disclosed progression may find the chest round opaque.
Strengths and weak points
Strengths
A retriggerable 3x Free Spins feature and a separate chest-pick bonus create two distinct forms of variety without changing the familiar 15-line base structure.
Weaknesses
The chest rules disclose twelve possible prizes but not their distribution or selection count, and the available maximum is cash-denominated rather than a stake multiplier.
Our Editor’s View
108 Heroes keeps its central rules compact: line wins use the five-reel, 15-payline format, a Wild substitutes for regular symbols, and Scatters or chests open separate bonuses. The Free Spins round is the more fully defined route, awarding ten spins with a 3x multiplier and the possibility of retriggering. Pick a Chest offers a different kind of interruption, but the available description stops short of explaining how selections and prize outcomes are distributed. That is the key limitation in an otherwise simple structure. The official RTP, Low volatility label and release date provide useful context, while its stated cash exposure should not be confused with a multiplier cap. Players who want classic line play with two bonus types may find this approachable; anyone comparing bonus value precisely will need the live game’s full prize rules.
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