Three things move as you go up the line. First, the payline count, which is the name on the tin. Second, the minimum meaningful stake: more lines usually means a higher floor per spin, because you're covering more ways at once. Third, hit frequency drifts. Spread the same bet across 100 lines and you'll land small wins more often, but each one is thinner. Spread it across 5 and the screen goes quiet longer, then pays a chunkier hand when it connects.
Now the part that surprises people. Almost everything else is shared.
Every Burning Hot game runs the same four-leaf-clover wild, landing only on reels 2, 3 and 4 and expanding to fill the whole reel. Every one uses the same two scatters, the Dollar sign, which pays from any position, and the Star, which only lands on reels 1, 3 and 5, rather than along a line. Every one keeps the classic red/black Gamble double-up after a win. And every one can carry EGT's Jackpot Cards four-tier progressive, the network-side mystery jackpot that can trigger after any paid spin. So the "which Burning Hot should I play" question is really a question about lines, stake and rhythm, not about features. The feature set barely moves.
