An expanding Wild stretches over its whole reel on landing and substitutes for every symbol except scatters. A single one fills three or four cells of a column, so combinations form on several lines at once. The hit frequency rises as a result, while payout size stays moderate.
A clear example is Thunderkick’s Tiger Rush (October 2018). The tiger lands on a middle reel and swallows the whole column, on a 5×3 grid with ten lines that pay both ways. The numbers read 96.30% RTP, medium volatility and 1,750x at the top. Everything can be checked with a pencil.
BGaming’s Fruit Million (16 December 2020) has neither free spins nor a bonus round: on a 5×4 grid with a hundred fixed lines, the whole interest rests on an expanding Wild on the three middle reels. Stated RTP is 97.34%; the best case is 3,000x. Blueprint’s Eye of Horus Megaways (19 November 2019) carries the idea over to the Megaways engine, with the Wild landing on reels two to five and up to 15,625 ways.
When the expansion is conditional
In NetEnt’s Hotline (2018) expansion depends on an activated row: in the bonus a Wild landing on it expands and then stays on its reel until the round ends. Seven free spins are all you get, and none can be won back, so everything hinges on how many Wilds get locked in seven attempts, and the 1,200x cap is not reached often. Theoretical return: 97.04%.
Play’n GO’s Dragon Maiden (14 November 2018) pairs expanding Wilds with respins on frozen reels and free spins whose reels grow to six rows. 243 ways and a 5,000x cap round out its numbers. In Yggdrasil’s Wolf Hunters (2018) the Slayer mode turns each werewolf into an expanding Wild at once, the strongest and rarest mode.
Notice the direction: the Wild stretches vertically, whereas in The Final Countdown Wilds on cloned reels stretch horizontally too. The slot glossary keeps the terminology behind such tricks short.
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The RTP shown is the game specification. The version offered by a casino may differ.
The RTP shown is the game specification. The version offered by a casino may differ.
The RTP shown is the game specification. The version offered by a casino may differ.
Demo
The RTP shown is the game specification. The version offered by a casino may differ.
Demo
The RTP shown is the game specification. The version offered by a casino may differ.
Demo
The RTP shown is the game specification. The version offered by a casino may differ.
Demo
The RTP shown is the game specification. The version offered by a casino may differ.
Demo
The RTP shown is the game specification. The version offered by a casino may differ.
Demo
The RTP shown is the game specification. The version offered by a casino may differ.
Demo
The RTP shown is the game specification. The version offered by a casino may differ.
The RTP shown is the game specification. The version offered by a casino may differ.
The RTP shown is the game specification. The version offered by a casino may differ.
Demo
The RTP shown is the game specification. The version offered by a casino may differ.
The RTP shown is the game specification. The version offered by a casino may differ.
Demo
The RTP shown is the game specification. The version offered by a casino may differ.
Demo
The RTP shown is the game specification. The version offered by a casino may differ.
Demo
The RTP shown is the game specification. The version offered by a casino may differ.
Demo
The RTP shown is the game specification. The version offered by a casino may differ.
The RTP shown is the game specification. The version offered by a casino may differ.
Demo
The RTP shown is the game specification. The version offered by a casino may differ.
Demo
The RTP shown is the game specification. The version offered by a casino may differ.
The RTP shown is the game specification. The version offered by a casino may differ.
The RTP shown is the game specification. The version offered by a casino may differ.
Demo
The RTP shown is the game specification. The version offered by a casino may differ.