By saying "Geometry" you didn't specify what kind of shapes can be used. Do I use basic shapes or I can also add variety of polygonal stuff? How many sides is the maximum for each polygon? Can using more complex shapes affect the score?
The Sprite Editor is broken, I try to draw but nothing shows up on the sheet. Even when I switch to another sprite/tile, when I click back on the previous one, it has restored to its initial state.
For me, the only way to change sprites is via External Programs (e.g. Paint.NET, Aseprite).
