Welcome to Stoppage 1.0.2! You can use the arrow keys to move around, though you can only move when you've hit a black wall. It will simply not allow you to change direction whilst you are moving (and you won't stop moving until you've hit black. Press 'm' for the menu, and then select your favorite level (there are currently only 5). This is a logic/puzzle game, and you should really work out how to control the green dot to the red dot before you press any keys.
Updates: 1.0.2: Menu bugs/glitches fixed. Instructions added. 1.0.1: Levels 4 and 5 added. Menu added. 1.0: Levels 1, 2 and 3 added.