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.