Starbound is a 2D space exploration sandbox game developed by Chucklefish Games. Star systems, planets, weapons, and enemies are randomly generated, but unlike other games in the genre there is also plot the player can follow if he chooses.
This is the first pass of the water physics in Starbound. They're super fast, work flawlessly over multiplayer and feature water pressure, drainage, flow, evaporation, swimming, applying force to the player and a bunch of other bits and pieces.
The "Blocky" look to the water isn't final, the final pass will smooth that out, but I wanted to show you how fast and fluid the water is.