Water - add water to your rooms. Set the height, if there is a background image, and if the water is visible or hidden when you're not inside it. Enemy bullets will not cross through water, nor will weather effects.
New Monsters - 3 new monsters specifically designed for under water areas.
Flippers - a new item for swimming under water.
Space map - added the ability to see planets and asylums that you've previously visited.
Room creation - decreased the time it takes to create a new room (some users might have seen a big of a lag spike when creating a new room block. This should be gone now).
Cut scene repeat - It was possible to see some cut scenes repeat if one happened right before a tutorial popped up. This has been fixed.