Bonus points are given when more than three identical pieces are formed. Some tiles are double-locked, to break the chains one needs to match them twice. A locked tile, indicated by a chain across it, can only be freed by matching it with other available tiles. Some tiles are silver, and these squares must be matched over twice to get cleared. The level is over when all of the golden tiles are earned. In the match-three games, players need to create matches of three or more in a row by clicking on adjacent pieces to swap them around, and make matches over the golden tiles to collect them. Players need money (coins or cash) to buy fish, accessories and comfort items for their tank earning it while completing match-3 levels (or Hidden Object levels in Fishdom H20: Hidden Odyssey and Aquascapes). The objective of the game is to fix up a virtual aquarium. The game is available for PC, Mac, Nintendo DS and online.

Another hidden object spinoff called Aquascapes is released in August 2014.

A new game release called Fishdom 3 is launched in June 2014, because of the game's series' birthday.

All three of the holiday themed Fishdom games were put together into one game in September 2010, called Fishdom: Seasons Under the Sea, however it does not contain any new content.

In May 2010, Fishdom 2 was released, with improved graphics and new levels.

Fishdom: Harvest Splash, a farm-themed match-3 installment of the original game.

Fishdom Frosty Splash, a Christmas themed installment of the original game.

Fishdom: Spooky Splash, a Halloween-themed match-3 sequel to the franchise, in October 2009.

Fishdom H2O: Hidden Odyssey, a hidden object spin-off of the title, in April 2009.

Fishdom is a puzzle game developed and published by Playrix in 2008.

Fishdom h2o hidden odyssey free online