Crocotile is a game of re-organizing tiles. Each game starts with the tiles in a scrambled state, and you must reposition them to their solved state, so that every set of 3 tiles contains the image of a crocodile, and so that the colors are in the right columns and the numbers are in the right rows (such as the WHITE-2 crocodile in the example above). The game includes 24 different puzzle sizes from small and easy (2 rows and 6 columns) to large and difficult (7 rows and 15 columns).

You can move only one tile at a time, and only the tiles that are on the top or bottom of a column. You can only move tiles from the bottom of a column to the bottom of another column, and you can only move tiles from the top of a column to the top of another column. (Tiles automatically slide up and down within a column to make room.) If you have a completely empty column (like the second column in the example above), then that will allow you to move a tile from the top to the bottom or from the bottom to the top (since that's the same as two individual moves, first moving the tile to the empty column where it is both the top AND bottom tile, and then moving it from there to the target column on the top or the bottom. The moved tile must match the tile it's moved next to (above or below) in two of its three attributes. Each tile has a color, a number, and a crocodile body part (the graphics can change radically with different image sets). For example, the 1-WHITE-HEAD at the top of the fourth column above could be moved to the top of the first column (where the 1 and HEAD would match the 1-RED-HEAD), to the second column (which is empty), to the top of the third column (where the 1 and WHITE would match the 1-WHITE-TAIL), to the top of the fifth column (where the 1 and WHITE would match the 1-WHITE-BODY), or to the bottom of the fourth column (where the WHITE and HEAD would match the 2-WHITE-HEAD). Of course, you wouldn't WANT to make any of those moves, since the 1-WHITE-HEAD is already in its proper "solved" location. :-)