Zoo Keeper is a tile-matching video game originally developed and published by Robot Communications for browsers.

It was later ported to the Game Boy Advance, PlayStation 2 and Nintendo DS by Success, which remains its best known incarnation.

[1] The game was then brought to American and European shores by Ignition Entertainment, and has since been released for iOS and Android devices under the title Zookeeper DX Touch Edition by Kiteretsu.

The objective of Zoo Keeper is to remove the animal tiles that fill up the screen by aligning three or more in a row or column.

One important aspect that sets Zoo Keeper apart from Bejeweled and its many clones is the ability to switch tiles while another move is still 'in progress'.

Similarly, while chains are formed after a level is cleared the clock continues, though the player is locked out from playing.

A key challenge when playing Zoo Keeper is the inability to find a valid move, which players know must exist (otherwise the screen would be reset).

On the DS version of the game, as shown in the screenshot, the upper screen shows a favourite animal,[6] for which captures generate increased points.

Zoo Keeper mode sets a quota of animal tiles to remove in order to advance a level.