Moon Chief is an interesting game that is a bit confusing at first, at least with respect to its bonus! You win by landing winning paylines although the real fun, not surprisingly, is with the bonus!
The bonus is triggered by landing 3 or more bonus symbols for 15 free games. During the bonus, two new Dream Catcher symbols are introduced(Red & Blue) and they pay mixed. Additionally, any Moon Chief symbol that lands on reels 3 or 5 transforms that whole reel completely wild. Finally, special Shield symbols may land on reel 3 and if they do, they have either a 2x or 5x multiplier associated with them and they are held for two additional spins. With a little luck, you can fill up reel 3 with 5x shields, land reels 3 and 5 completely wild, and then all you need are matches on reels 1 and 2 for that Big Win or Jackpot, Enjoy!