Fishdom H2O: Hidden Odyssey has two parts: the aquarium shop and the dive parts. In the shop, you can spend money on fish, plants and comfort items. When you need cash, click dive, and you're taken to the seabed to complete a task. This part of the game is about finding things. The seafloor is covered in objects, and you have a shopping list of items to find. The faster you are, the more money you earn, and the more you can put in your aquarium.
Presented in a cartoon, family friendly style, Fishdom H2O: Hidden Odyssey is suitable for children. When you have an aquarium you like, you can set it as your screensaver, which is a nice touch. There are two play modes in Fishdom H2O: Hidden Odyssey - relaxed and timed. The timed mode is more hectic, as you are always against the clock, and the relaxed version is exactly that.
If you're looking for something relaxed and gentle, Fishdom H2O: Hidden Odyssey will suit you. If you like finding things puzzles, you'll love it.