Prime Master is a game that allows users to compete against both friends and robots in order to determine the ultimate winner.

- Composite cards: 4 (x10), 8 (x4), 10 (x4), 20 (x2), 25 (x2), 26 (x2)
- Operation cards: -2 (x12), +1 (x12), and +7 (x12)
At the start of the game, each player is dealt 7 cards. The remaining cards are placed face-down in a stock pile on the left side of the table, with the topmost card being placed face-up on the table. Each player has a scoreboard on their left side and a timer on their right side to indicate the time remaining for each move.
The first player starts their turn by drawing a card from the stock pile and playing a card from their hand. If the face-up card is a composite card, the player must play an operation card, and vice versa. If a player is unable to play a card, they must discard a card and pass their turn to the next player.
The current sum of the cards on the table is displayed in the bracket on top of the cards. If a player forms a prime number with the cards on the table, they win the trick and earn points equal to the value of the prime number. The cards that form the prime number are removed from the table, and the winning player starts the next turn.
Each trick must be composed of a single composite card and at least one operation card. Once a composite card is placed on the table, no other composite cards can be played in that trick by the remaining players. If the stock pile is used up, all cards except those in the players' hands are collected.
Overall, Arithmetic Tricks is a fun and challenging game that requires strategic thinking and quick math skills. I highly recommend it for anyone looking to exercise their brain while having a great time with friends or family.
Version 1.1.3: Updated arrow graphic in instructions page