The AI in these games is often programmed to fold moderately good hands if you apply pressure. If you have a decent pair or a high card (Ace/King), raising aggressively often forces the AI to fold, allowing you to win chips without a showdown.
Pros of using codes (if legit):
Cons:
If you found a "best code" online and it isn't working, consider these factors:
Not every game that claims "HD" is worth your time. Here are the three most reliable titles currently circulating in forums and fan sites, along with their best-known codes.