This is a port of Gravity Force (see http://www.gravity-force.de )

In Gravity Force you control a little ship. Your mission is to collect all cargo and return it safely to your home base. This would be quite easy if there were no enemies and no gravity pulling you to the ground…

http://www.gp2x.de/cgi-bin/cfiles.cgi?0,0,0,0,27,2305