Each fish has different physical characteristics. The dolphin dives below the surface and re-emerges, requiring a much lower arc than other fish. The inflated blowfish is more prone to skipping above the surface at the sacrifice of distance.
There is depth here in what type of fish you choose to fling, as well as the trajectory of that fling. With six different fish to choose from, there's certainly some variety here. Mastering the nuance behind each fish is paramount to achieving the best score.
At its heart, Fish Out of Water is a competitive game. Leagues let you compete on daily leaderboards, either with friends or with strangers. Halfbrick has also incorporated a modified version of Jetpack Joyride's lauded mission system: each level tasks you with achieving three different goals before you can level up. With each level, you unlock crystal packs.
By combining two different types of crystals – big and small – you create boosts. These boosts run the gamut from increasing the number of times you'll skip on your next toss to changing the score of certain judges at the end of the round. Of course, in order to discover these boosts, you'll have to burn through a few different crystals as you experiment with combinations.
Fish Out of Water has the lowest barrier of entry of any Halfbrick game, though somewhat to its detriment. Over a sustained period of time, Fish Out of Water failed to capture my attention by sheer misfortune of I just got tired of flinging fish.