Zerotaire is an endless card matching puzzle game about subtracting numbers. 

You play by matching numbers from two cards with different suits to either remove them if they have the same number or combine them into a new card containing the difference of the two numbers.

The goal is to remove all the cards from the board within the time limit.  You start with a small amount of cards first, but you'll get more and more as your level goes up. 

As the number of cards increase, the sequence in which you match them matters, and an incorrect sequence of matches may lead you into an unsolvable board state. Find the right sequence of matches to clear all the cards within the time limit and get the highest score possible!

Credits for assets:

• Pixel art cards asset by blueyedrat