Expanding wild slots: reel expansion and substitutions explained
The existing directory entries below are examples tagged with this mechanic. They are not a popularity, payout or safety ranking; use the sourced comparison guide below to verify each exact game.
Sticky Bandits Thunder Rail is another newer entry, using two dedicated Row and Column Expansion Wilds that permanently grow the grid from 5×4 up to a full 7×7 as they land, rather than expanding and resetting on a single spin.
The Wild Life Extreme is a newer entry here, IGT’s safari sequel where the lion wild can cover the whole of reels two, three or four on a single spin.
Xmas Drop from Hacksaw Gaming uses a downward-expanding Wild Santa that fills its whole reel once it completes a win, with a linked Wild Gift symbol that turns into a multiplier of up to 200x when an expanding Santa passes through it.
Ammit Arctic Freeze Power Combo is another recent entry, where a green orb modifier turns any snake wild that lands during free spins into a full-height wild covering its whole reel, keeping any multiplier it was already carrying.
Royal Potato is a newer entry here, using a sticky Jumbo symbol that grows to a maximum 5×5 size across the free spins rather than resetting each spin.
Age of the Gods: God of Storms 2 is a further entry, where Playtech’s Ship wild fills a reel and triggers a respin that keeps adding rows, growing the grid from 5×3 up to 5×8 rather than expanding on a single spin and resetting.
Expanding Wilds Slots Casinos
Where to play Expanding Wilds slots? You can play Expanding Wilds feature slot games at the below online casinos.
Last checked: 11 July 2026 by SlotsLike.
Direct answer: an expanding wild begins in one position and then covers additional positions, commonly a full reel. Expansion, substitution and any linked respin are separate rules; the symbol does not necessarily pay for itself or expand in every mode.
Expansion diagram
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Illustration only: the paytable decides whether the wild substitutes, expands before or after evaluation, and triggers another spin.
Common expanding-wild variations
- Full-reel expansion: one wild covers every visible position on its reel.
- Directional expansion: the wild grows up, down or across only permitted cells.
- Sticky expansion: the expanded wild remains for a feature or respin.
- Expansion plus respin: the expanded reel stays while remaining reels spin again.
What to compare
Check where wilds may land, excluded symbols, the order of win evaluation, whether expansion needs a winning line, respin limits, RTP version, volatility and maximum win. Starburst is a sourced example where the wild expands across a reel and triggers a respin; that does not make those rules universal.
Selection method and limits
The catalogue below contains pages tagged with expanding wilds. SlotsLike verifies the exact behaviour from developer material or the game help file and separates expanding, stacked, walking and sticky wilds. Feature labels do not predict session outcomes.
Affiliate disclosure: SlotsLike may receive commission from marked operator links. Commercial relationships do not decide inclusion or ordering. Gambling is for adults aged 18 and over; see our responsible gambling guide.
Sources & Verification
- Evolution/NetEnt official Starburst expanding-wild and respin rules
- Evolution official full-reel expanding-wild example
- UK Gambling Commission RTS 3 game-information requirements
Correction log
11 July 2026: replaced generic claims with an accessible expansion diagram, rule variants, comparison criteria and primary sources.