Mortal Kombat: Deadly Alliance Cheats

Create two player profiles and earn some coins with each one. Then start a vs. match and wager some coins (R button).
After that only player 1 bids coins, wins the match and earns the coins but player 2 won't loose any.
You can stop when you have about 30000 - 40000 coins of each color, you won't need more to unlock all the krypt secrets.

You won't see what you bid so here's what you need to press for the desired color:
right, up = Onyx
right x2, up = Jade
right x3, up = Ruby
right x4, up = Gold
right x5, up = Platinum
right x6, up = Saphire