Back in 2003, I had produced a title named Number + Matrix. It was for my senior project at Irvington High.
It was originally an arithmetic based game. First designs were to make a Tetris Attack (Panel de Pon) clone using math blocks. So it was to be a match-three puzzler. At the time, I had trouble with the logic for a match-three board so I opted for a grid-based pick and choose game. That came to be known as Number + Matrix today. It can be found at: GAMEJOLTLINK
About a year ago, I started work on Number #Plus. The more modern mobile remake of Number + Matrix. Many changes were made right off the bat.