Extra Chilli is Big Time Gaming's Mexican-food-themed Megaways slot and one of the most popular titles in the studio's catalogue. Released in 2018, it shares the same Megaways engine as Bonanza — up to 117,649 ways to win, cascade mechanic, unlimited multiplier in the bonus — but distinguishes itself with a feature that Bonanza does not offer: the ability to gamble free spins.

The base game operates identically to Bonanza. Six reels with variable row heights, cascading wins, and scatter symbols spelling C-H-I-L-L-I trigger the free spins when all five land simultaneously. Eight free spins are awarded as the minimum, and the cascading unlimited multiplier applies throughout the feature.

The distinguishing mechanic is the free spins gamble. When the scatters land and the free spins are triggered, a gamble screen offers the option to risk the free spins in exchange for potentially more. A 50/50 gamble: win and the number of free spins doubles; lose and the feature is forfeited entirely with no spins played. Multiple gamble stages can be taken, theoretically doubling the spins several times before accepting the result.

The gamble feature fundamentally changes the risk profile of the slot. Players who accept all gambles and win at each stage can enter the free spins with thirty-two or more spins, dramatically increasing the expected value of the bonus relative to how it was triggered. Players who refuse to gamble receive the standard eight spins. The mechanic rewards decisiveness and adds a genuine player agency element that most Megaways clones do not replicate.