---------------------------- [2^] X [3 x 3] [2^] X [4 x 4] = 1024,2048,4096,8192.... [2^] X [5 x 5]
[3^] X [3 x 3] [3^] X [4 x 4] = 81,243,729,2187..... [3^] X [5 x 5]
[Fibonacci] X [3 x 3] [Fibonacci] X [4 x 4] = 144,233,610,987..... [Fibonacci] X [5 x 5]
For Fibonacci games, a tile can be joined with a tile that is one level above or below it, but not to one equal to it. For Powers of 3, you need 3 consecutive tiles to be the same to trigger a merge!
The smaller the board is, the harder! For 5 x 5 board, two tiles will be added every round if you are playing Powers of 2. ----------------------------