Explore tropical jungles with Big Thunder slots and you can get to know the story of world’s biggest gorilla thanks to Ainsworth company that offers this game in mobile and flash version. The game is developed with a modern structure that includes three-dimensional graphics and a special bonus game that can trigger up to 4 jackpots. The background of the game is designed with a picture of the tropical jungle and the main character of this game is a huge gorilla. The Big Thunder slot machine features 3 rows, 5 reels, 30 lines and a balance of 500 coins. The gorilla symbol acts as a wild symbol, appearing on reels 3, 4 and 5 only and substitutes for all symbols except the scatter which is represented by the game logo. 15 bonus games are triggered by any 3 or more symbols with the game’s logo. During this feature, a bonus reel appears with 2 new bonus symbols ‘x3’, ‘x5’ and the game logo. Bet and play lines are the same as the game that triggered the ‘Reel’ bonus.