The Dog House Megaways demo: a game with a random number of ways
The Megaways framework replaces a fixed payline structure with a variable one. Each reel displays a randomly chosen number of symbols on each spin, and the number of ways to win is the product of the symbol counts across the reels. That product is recomputed every spin, which means the geometry of the game changes constantly and the theoretical number of winning combinations swings enormously from one spin to the next.
The Dog House Megaways layers that framework onto the sticky-wild logic of the original. Wins are evaluated across adjacent reels from the left, paying symbols are removed and replaced by cascading symbols, and the free spins round introduces persistent wild behaviour with multipliers. It is two mechanics in a trench coat, and the interaction between them is what gives the game its character.
The Dog House Megaways free play version on this page runs the genuine client on virtual credits, and it is the clearest way to watch a ways count fluctuate without any money riding on the fluctuation.