Inspiration for casual games can be drawn from the simplest of things, from things like three-in-a-row matchmaking to falling bricks, but the complexity of the source does not a game maketh, and Sum proves just that. Based on the fundamental concept of addition, the aptly titled game promises fast-paced and thrilling gameplay for players of all ages, contrary to the conclusion one might draw from its description.
Packing three different modes, Sum draws on your perception as well as mathematical skills, giving you a grid of numbers, from within which you have to pick three numbers, in a manner that the first number picked is the sum of the two subsequent numbers. Classic Mode gives you 90 seconds to play, with 3 seconds being added for every correct combination and 5 seconds being deducted for every wrong one. Rush Mode is slightly tougher, with 90 seconds being the time regardless of correct and incorrect combinations, and lastly, Infinity Mode is present as a practice style of play, with no time limit being imposed as you keep on adding numbers, to infinity and beyond.
Sum is free to download on Google Play, and is an excellent choice for casual gaming as well as brain training. The game works offline, has no advertisements and has support for statistics as well as Google Play Games. Happy adding!