* The OpenPass Game Users communicate with each other through voice communication through a microphone, hold strategy meetings, and submit 20 cards. Once all players have submitted their cards, the game begins again with 10 cards selected from the 20 cards. The player who completes the highest formula wins. * Rules of play 1. Players receive 20 basic cards mixed with numbers and symbols. 2. Additional cards can be purchased by paying garnet, and a set of 20 cards includes 1 gem, 2 gems, and 3 gems. 3. Players select the number symbol card they want among their cards, make 20 cards, and submit them to the dealer. 4. The dealer shuffles the 20 cards received from the player and places them on the table, one by one, starting from the left of the equal sign, with the back of the card facing up. 5. When the player ‘opens’, the front of the card is revealed and included in the formula, and when the player ‘passes’, it is removed from the formula and moves on to the next card (passing is possible up to 10 times). 6. The formula is completed when all 10 cards are filled in the formula board. 7. If there are symbol or number cards in a row, only the leftmost card is valid. 8. If the card immediately to the left of the equal sign is a symbol, the symbol card disappears. 9. If the last card (far left) is a symbol, the previous number is considered '0' in calculations. 10. If the answer to the formula is the highest, you will be the winner, and if the answer is the lowest, you will be a candidate for elimination. The winner will receive 5 gems, and the runner-up will receive 2 gems.