Northern Temple Slot by Evoplay

The base grid starts at 5x3 with 243 ways to win. Each tumble after a winning combination adds one row to every reel, pushing the layout up to 5x6 and 7,776 ways. Rows reset at the start of each new spin, so that full expansion only happens during long drop chains.

A win multiplier tracks alongside the growing reels - it starts at x1 and climbs by 1 with every consecutive drop. There is no ceiling. In the base game it resets between spins, but during free spins the multiplier carries over from round to round. A decent streak of 8-10 drops in early free spins sets up double-digit multipliers for the rest of the feature.

Coin symbols add a second payout layer. They stick on the reels throughout a drop sequence, and if three or more remain when drops end, each Coin reveals a random bet multiplier. Those values are then scaled by the current win multiplier and summed, so Coins that land late in a chain - when the multiplier is already high - produce the biggest hits.

Three Scatters on reels 2, 3, and 4 trigger 15 free spins, retriggerable for another 15. Wild symbols appear on reels 2 through 5 and substitute for everything except Scatters and Coins. The Bonus Buy version of this game adds a direct purchase option for those who prefer skipping straight to free spins.