Maybe there should be some standard rules for 2048, because I tried three games, the original, the Android one and this one, and everytime there are different r

Maybe there should be some standard rules for 2048, because I tried three games, the original, the Android one and this one, and everytime there are different rules: - Is it a valid move to not make any tile move? - What is the order of tiles merging (top-first? left-first?) - Can we merge multiple tiles in the same row/column in one move? - ...