The first mode in Summa is called “Numbers,” and it asks players to tap and drag their finger on number tiles that add up to a key number at the top of the screen. If players are trying to form the number six, for instance, they could create a chain of tiles containing a three, two and one. The three difficulty levels here relate to the number of chains players will have to create while being timed.
A second game mode called “Moves” asks users to create mathematical equations by selecting the proper numbers and the solution in a chain. Each formula is a simple addition equation, so users would need to select two or more numbers that add up to a third tile’s number. Since number tiles only contain single digits, any “ones” are added by the game (like the one in 12, for instance). As an example, this mode may see users creating a line of two three tiles, connected to a six tile, because three plus three equals six. The three difficulty options relate to the number of equations users will have to create in each game.
The final gameplay mode is “Time,” and it focuses on making number chains that are multiples of a key number at the top of the screen. This mode gives players a limited amount of time to create as many chains as they can. For example, if the key number is four, players could create chains of numbers that add up to four, eight, twelve and so on. The three difficulty levels determine the amount of time players have to earn points.
In addition to single-player gameplay, users can compete in turn-based player-vs-player gameplay thanks to Summa’s Game Center support. Assistant mode is also available for free in some modes, and helps players calculate numbers instead of doing so in their heads. Access to this assistant in the “Time” gameplay mode, as well as in-game statistics, are available in the premium version of Summa, which is available for $1.99.
“Summa is particularly fun and addictive because it includes strong elements of simplicity and challenge,” said Robby Yung, CEO of Animoca Brands, in a statement. “It is an ideal game not just for math and puzzle enthusiasts but also anyone who wants to keep a sharp mind.”
Summa is available to download for free on the iTunes App Store. An Android version is coming soon.