Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. ZOo Keeper is an online puzzle game developed by Robot Communications that was later ported to the Nintendo DS by Japanese video game publisher Success. THe game was then brought to American and European shores by Ignition Entertainment. IN Japan, before the release for Nintendo DS, Success released this game for Game Boy Advance and PlayStation 2 with alternative name Zooo. THe PlayStation 2 version of this game was later released in Europe by 505 Game Street under the title Zoo Puzzle.