This is DarkSide by CrazyNorman.
HOW TO PLAY:
You are a Jedi Knight.  You must clear imperial bases and escape with your teleporter.
Use the arrow keys to move and jump.  Use 'm' to swing your lightsaber.  Use 'n'
to do a force aided jump.  Both of these use Force Power, which recharges.

If you kill an Ewok, you go closer to the dark side.  The closer you are, the faster your
health recharges and the faster your force power recharges, and the slower you move.

You can go from the light side to the dark side, giving various disadvantegous
and advantages (Light and Darkness).

HOW TO USE THE INGAME LEVEL EDITOR:
Click a tile type at the bottom of the screen.  You must place arrows to guide
the storm troopers and moving platforms (when they hit an arrow, they go the
direction which it points in).  To scroll left and right, move your mouse to the
left and right sides of the screen respectively.  To switch which level you are editing
hit +/- on the Numpad.  Level 0 is not playable.  To save a level, simply switch the level
you are editing.  You can scroll the available tiles by putting your mouse at the bottom
left/right sides of the screen.  Left click to place a tile.  Right click to snap
your mouse to grid.  Middle click to snap the grid to grid (you will see what I mean).
Hit 'z' to undo.  Hit 'x' to redo.

Enjoy your day.