Our unique licensing system allows us to offer games for free legally. Get free parenting updates weekly. Fishdom is a colorful, addictive puzzle free online zoom games set under water, as if it was right inside a fish tank. Your aim is to arrange similar pieces in groups of at least three by swapping them with each other, so that they disappear from the screen. When all the golden-boxed pieces on the Fishdom interface are gone, the level is complete and you're given money as a reward. This game can be played solo, in pairs, and in threes. Fishdom is a free-to-play online game that allows players to create and customize their own underwater world. Players start with a basic aquarium and must earn coins and gems by completing puzzles and challenges to buy new fish, decorations, and accessories for their tank.