Dark Jungle slot has a gorilla character that awards an Instant win of up to 50x the stake when the gorilla symbol lands on the middle reel.
There is also a Free Spins feature with progressive Lock and Re-spin. Every win during free spins locks and starts re-spins that continuously improve the win until no further matching symbols and Free Spin symbols land. The final win is multiplied by the successive number of winning spins.
An additional 3x Free Spins is awarded for each Free Spin symbol that lands and landing three Free Spins symbols or more re-triggers the bonus.