A Player's Guide to Gridrunner++ - http://pw1.netcom.com/~tanat2/gr.html Offers a strategy guide.
Grid Runner++ - http://www.medwaypvb.com/gridrunner_main.htm Features game instructions, enemy and weapon descriptions, and demo download.
Gridrunner++ - http://www.sejus.com/earth2willi/gridrunner.php Fan site offers screenshots and music.
