NeuralPlay Five Hundred (500) offers many rule options. Customize to play with your favorite rules! Preset rules are provided for both American and Australian variants.

Features include:
• Undo.
• Replay hand.
• Skip hand.
• Offline play.
• Detailed statistics.
• Bid and play hints. Uncertain of what to bid or play? See what the computer would do!
• Bid and play checker. Let the computer check your bids and plays throughout the game and point out differences.
• Play review. Step through the play of the hand to review and improve your play.
• Six levels of computer AI to provide challenges for beginning to advanced players.
• Unique thinking AI to provide a strong AI opponent for different rule variations.
• Claim. Claim the remaining tricks when your hand is high.

Rule customizations include:

• Kitty/deck size. Choose from 2 to 6 cards for the kitty. The deck size will adjust accordingly adding the lower cards and an additional joker as required.
• Bidding rounds. Choose between multiple rounds or a single round.
• Nullo (Misere) bids. Choose to enable or disable Nullo bids.
• Open Nullo (Open Misere) bids. Choose the point value for Open Nullo bids.
• Slam. Optionally award a minimum of 250 points for a slam.
• Must bid to win. Optionally set a cap on the defenders' score to enforce must bid to win.
• Inkle bids. Choose to make 6 level bids Inkle bids.
• Defender scoring. Choose whether or not to award points to the defending team based on tricks taken.
• Misdeal. Optionally allow a player to declare a misdeal when dealt a hand with no aces and no faces.
• Game over. Choose whether the game ends at a predetermined number of points or after a certain number of hands.