Sky-High Rebellion in Victorian Clouds
Green Gas Canisters spread to adjacent low-paying symbols, transforming them into Wilds. Purple Gas Canisters transform ALL low-paying symbols on the entire grid into Wilds when part of a winning combination.
Wilds created by Gas Canisters can receive random multipliers from 2x up to 200x. In bonus games, sticky multipliers double each time affected by Gas Canisters, reaching a maximum of 5,000x.
Sky City offers 8 free spins with sticky multiplier wilds. Gaslight District provides 10 spins with guaranteed Wild symbols. Court of High Steam guarantees a Gas Canister on every single spin.
Steamrunners delivers a mechanically unique slot experience set above smoke-stacked Victorian streets where fearless rebels ride gas-powered airships through floating cities. This 5-reel, 4-row, 14-payline game from Hacksaw Gaming features a revolutionary Gas Canister spreading system that fundamentally changes how Wild symbols appear and multiply across the grid.
The core mechanic revolves around two types of Gas Canisters. When a Green Gas Canister lands, it spreads horizontally and vertically to adjacent low-paying and Wild symbols, transforming them into Wilds if they contribute to a winning combination. The spread continues chain-reaction style through connected symbols. The Purple Gas Canister operates more aggressively, transforming every single low-paying symbol on the entire grid into a Wild symbol when wins are possible.
Critical Feature: Only one Gas Canister can land per spin, making each appearance strategically significant. Transformed Wilds can receive random multipliers ranging from 2x to 200x in the base game, with values adding together when multiple multiplier Wilds participate in the same winning combination.
Triggered by 3 FS scatter symbols. Grants 8 free spins where all Wild multipliers become sticky and remain in position throughout the feature. Each time a Gas Canister affects a sticky Wild, its multiplier value doubles. Maximum multiplier reaches 5,000x. RTP: 96.31%
Activated with 4 FS scatters. Provides 10 free spins with Sky City mechanics plus a guaranteed Wild symbol present on every single spin. This ensures constant multiplier potential throughout the entire bonus. RTP: 96.26%
Hidden Epic Bonus requiring 5 FS scatters. Delivers 10 free spins with one Gas Canister guaranteed to land on each spin, creating consistent Wild transformation opportunities. This is the most volatile bonus mode.
During all bonus games, landing 2 additional FS scatters awards +2 free spins, while 3 scatters grant +4 spins. The sticky multiplier doubling mechanism in Sky City and Gaslight District creates exponential growth potential as Gas Canisters continue to affect the same Wild positions repeatedly.
Steamrunners offers two toggleable FeatureSpins modes. Bonushunt FeatureSpins costs 3x your base bet and makes each spin 5 times more likely to trigger a bonus game, functioning as an accelerated bonus hunt mode with 96.31% RTP. Smokeshow FeatureSpins costs 50x your bet and guarantees one Gas Canister symbol on every spin at 96.26% RTP, though FS scatter symbols cannot land in this mode.
Direct bonus purchases include Sky City at 80x bet, Gaslight District at 200x bet, and all three bonuses maintain competitive RTP values between 96.26% and 96.31%. The volatility designation of High with 4 out of 5 flame indicators accurately reflects the game's extreme variance potential.
The paytable divides into card symbols (10, J, Q, K, A) as low-paying options all sharing identical 100x payouts for five-of-a-kind, and thematic steampunk items as premium symbols. The telescope and scroll both pay 250x for five symbols. The top hat and gramophone increase to 400x. Aviator goggles serve as the highest regular symbol at 500x for five matches.
The Wild symbol itself pays 1,000x for five-of-a-kind and substitutes for all paytable symbols. Combined with potential multipliers, a single payline with multiple multiplier Wilds can generate substantial wins. For example, at a 100 EUR bet level, five Wild symbols already deliver 1,000 EUR before any multipliers apply.
The base game operates at 96.32% RTP calculated across 10 billion simulated rounds, providing statistical reliability for the published return percentage. The 14 predefined paylines follow left-to-right adjacent reel patterns starting from the leftmost reel, displayed as green highlighted positions on grid diagrams within the game information screens.
High volatility classification means extended periods without significant wins interspersed with potential large payouts. The mathematical model prioritizes rare but substantial hit events over frequent small returns. Players should approach with bankroll management appropriate for high-variance slots, as the standard deviation significantly exceeds medium volatility games.
When the 10,000x maximum win threshold is reached, the game immediately ends the current round, awards winnings, and discards any remaining free spins or active bonus features. This hard cap prevents wins from exceeding the mathematical maximum regardless of remaining spins or multiplier accumulation.
Steampunk Visual Design: The interface features copper and brass pipe framing with Art Nouveau decorative corners on each grid cell. Indicator lights in purple, yellow, pink, and green accent the machine frame. The sky background shows floating city silhouettes in purple and pink tones, maintaining the Victorian airship rebellion aesthetic throughout all game screens.
Demo mode provides 5,000 EUR play balance for risk-free testing of all features including bonus buys and FeatureSpins modes. Advanced autoplay settings allow configuration of total loss limits and single win limits, with automatic stopping when thresholds are exceeded. Turbo and Super Turbo modes offer faster gameplay while maintaining fair RNG outcomes.
Interrupted games can be resumed upon restarting, with incomplete rounds paused until completion or voided after 24 hours of inactivity with bet refunds. Winnings on rounds where outcome is already determined auto-credit after one day. All game rounds use certified random number generation unaffected by external errors or player actions beyond bet selection and spin initiation.