Level Editor
With the built in level editor, you can make your own custom levels. The editor consists of a 20*15 cells editing area and a hud to the right. In the hud, you can select which block you want to appear when you left click in the editing area. You can hold the shift key down while pressing the left mouse button and moving the mouse to add multiple objects. You can remove objects by using you right mouse button. Note that you must have at least one, but only one, player in the room.
This is what the level editor looks like:
The following buttons can be found on the bottom of the hud:
New
Clears all blocks from the level and starts a new map. If there are some unsaved changes, you will be asked if you want to save these first.
Load
Opens up a file dialog where you can choose a map file from your maps folder to load up in the level editor.

To open a map, you select a file from the list and then click the Open button. And like the New button, if there are some unsaved changes, it will ask if you want to save these first. You can also delete the selected file by pressing the delete key on your keyboard.
Save
Opens up a dialog where you can save the level you have made in the level editor, into a map file in your maps folder.
Play
Lets you play the level you have made.