If playing in the 'Double Up' mode, all initial symbols are copied to a second reel set after which your spins begin. The Mighty Cash Feature is initiated by landing 5 or 6 or more Mighty Cash bonus symbols, depending on your selected denomination, where each will have Credit Awards or Progressives on them. You win in the base game by landing 2 or 3 of the same symbol on adjacent reels from left to right, depending on the symbol, and starting with the leftmost reel although the real fun is with one of the two special features of the game: Once again, this slot video proves you don't always need to bet big in order to Win Big! Mighty Cash remains one of my favorite families of slots and the Double Up Lucky Tiger version is yet another great one where for an extra bet, you can enable the Double Up Feature of the game!