Brain Age Express games in order

All 3 games of the Brain Age Express series in the order they came out, from Brain Age Express: Arts & Letters (2008) to Brain Age Express: Sudoku (2009).

1. 
   Brain Age Express: Arts & LettersDS, DSi · Nintendo System Development
   24 Dec
2. 
   Brain Age Express: MathDS, DSi · Nintendo System Development
   24 Dec
3. 
   Brain Age Express: SudokuDS, DSi · Nintendo System Development
   22 Apr