Original: problems and solutions uniting against opponents
Stairs : organize the tables in the logical order with problems
Expert : tables organized in logical order with solutions
Genius : mental arithmetic , multiplication and addition to reaching a target result
Fast : quick result of the problem
FastExpert : equal to Fastpero with solutions
Alert: the fastest say result of the problem
AlertExpert : equal to Alertpero with solutions
Focus: memorizes the location of the problem and the solution
Solitaire: way to play where the challenge is individual
Ways to play in English
Ways to play in Spanish