Use Left and Right arrows to move left and right, up arrow to jump and swim up, and down arrow to swim down.
All the art and a bit of the code is done by jasperjay, most of the code has been replaced to make the engine run smoother and without any glitches. The physics have been redone to improve how well the program runs. Includes improved water physics, including buoyancy; better collision detection; and improved slopes as well.