Secret Code is a fairly simple 5-reel slot with 20 fixed paylines. The slot allows for changing two wagering options, namely, a coin value ($0.01–$0.5) and a bet level (1–5), so you may bet anywhere between $0.2 and $50 per spin. Alternatively, clicking the Max Bet button will place the maximum possible bet at the selected coin value and set the reels in motion automatically. The first, second and third largest cash prizes in the game are $10000 (five Scientists), $5000 (five Ladies) and $3000 (five Opened Books).

Bonus features

The Monk with Knife symbol serves as a wild that replaces other normal icons. Appearing on reels 2, 3 and 4, the wild expands vertically along the entire reel to create more winning chances.

Another lucrative symbol is a scatter (Charm) that triggers a free spin feature if 3+ land on the reels. Before the feature begins, you are asked to pick a scatter from among the scatters that have appeared in the triggering game. The symbol that you choose will show the number of free spins you get and a win multiplier. During the free spins, 2+ scatters occurred on the screen will give you an extra free spin or a multiplier that is added to your current multiplier value, up to the maximum of x20.