Hold left click to fire your rocket at the crosshairs. But where it actually goes depends on gravity, anti-gravity and whatever else is floating around out there.
fire : left_mouse
jump : na
movement : mouse
Add this game to your site.
Copy and paste this html code to your web page.
<a href="http://www.redribera.es/games/play-negative-space"><img src="http://games.mochiads.com/c/g/negative-space/_thumb_100x100.jpg" width="120" height="90" border="0" ><br/>Negative Space<br/>Click to play</a>