Summle is based on the well-known word game Wordle, but has been modified for challenging guessing in the math mode. The primary difference between the two games, however, is the complexity of Summle. Due to the fact that the player must predict the sequence of equations rather than simply enter the letters, Summle can be a bit more difficult for those looking for a simple and casual game to play in their free time. The objective is to attain the stated number at the top of the game. According to the instructions, the player can only use each number tile once, but each new sum can be used in a different equation, creating an infinite number of ways to solve the conundrum.