Glowfish is a 2D casual/adventure game with beautiful looking and colorful enviroments, cartoonish characters and relaxing music.
The main goal in the levels is to collect enough friendly fishes to unlock gates which let you proceed further until you reach a big swirl that takes you to the next level.
The game features 50 varying levels across 5 different stages, boss fights at every last level of a stage, tons of different enemies and threats (really, I stopped counting after some time) and also 'Chums', which accompany and assist you on your way and have their very own, upgradable, abilities. Upgrading can be done by collecting coins which are spread throughout the levels.
If you take your time to explore the levels, collect all coins and search for the secret areas the playtime should be around 8-10 hours.
I highly recommend to play the game with a Xbox360 controller so you can lay back and relax while playing the game. :)