Match 20 Challenge is a free colorful puzzle online game for boys. The game starts at 5, looks easy until 10, gets fiendish at 15, and challenges you to get to 20. Anyone can learn it, but you'll have to concentrate to make it all the way. TIt is a very good skill-based game that tests both reaction time and dexterity. Can you get to Twenty? Match 20 Challenge,brain teaser puzzle,online game,kids game,puzzle game,brain training,reaction time,dexterity,HTML5 puzzle,number matching,fun puzzle,boys,online kids games,skill based game,concentration,educational game