From 1958 to 1973 NBC aired a game show called the Concentration. The host would make guests take on each other in a race to solve the puzzles. The game Classic concentration is more or less based on that show. It was published in 1988 by ShareData and was developed by Softie Inc. In the game Classic Concentration, a player could opt to play against another human being as well a computer generated bot. The gameplay needed a set of 25 tiles that would have some word under them. There would be two tiles with the same word under them. The tiles hid under them a puzzle that had to be cracked. The first person to crack that puzzle would win. Each player would get a turn to choose twice from the tiles. If both of his/her choices matched, both of those tiles would be removed exposing the puzzle picture under them slowly. If the choices don’t match, the tiles would close again and it would be the turn of the opponent. The trick to the Classic concentration game is to pay attention to the tiles that didn’t match. For example once your opponent opened two tiles and they didn’t match, you have knowledge of the words under those two tiles for the next turn. And as more number of tiles get uncovered, the chances of you finding a matches tile after your opponent misses becomes exponentially higher. So, even if a player has had a bad start to the game, he/she can still win it in the last minute. That’s why this nail biting game was so loved.