HippoPop by Yggdrasil — RTP & Analytics

HippoPop is a 5-reel slot starting on a 3-row grid with 243 ways to win, expanding via the PopWins mechanic where winning symbols pop and are replaced by two new symbols per position, increasing reel height up to 6 rows in the base game and 8 rows in free spins for a maximum of 65,536 win-both-ways paylines. Cascading pops continue until no new wins form, with a progressive multiplier activating after reaching 5x6 in base play (+1 per subsequent pop) that carries over to free spins, where it persists and increments without reset between spins. Free spins trigger upon maxing base grid height, awarding 5 spins gambled on a bonus wheel for up to 12, starting on 5x3 but expanding further; grid resets only to the shortest achieved row height post-sequence. Golden hippo symbols boost payouts (x2 at 6 rows, x3 at 7, x4 at 8) during free spins. Set in a psychedelic jungle inspired by Oaxacan art and wood carvings, it features 3D visuals of hippos, flamingos, panthers, zebras, frogs, toucans, and fish amid vibrant, colorful aesthetics. It stands out in the PopWins series through non-resetting multipliers, win-both-ways evaluation doubling effective paylines, and dynamic grid persistence enhancing volatility for high potential wins up to 48,150x stake.