Electric Shocktopus
Use the arrow keys to move and jump. You can even jump off walls! The + and - signs indicate a charged area. Press Z in those areas to give yourself a positive charge. Use electromagnetic power to propel yourself away from other positive charges or pull yourself towards negative charges. Try to get further in the levels with your shocktopus. If you find yourself on positive ground, you can use your shock powers to launch yourself upwards. The higher you get, the better, because falling down means game over. Collect individual stars, get over obstacles and do everything you can to avoid spikes.