Hover Force was originally designed to be a 3D game, but the collapse of Mattel's electronic division and tightened resources for INTV result in the 3D glasses being dropped.
Hold the 0 key on either controller when the game is on the title screen to display some credits:
HOVER FORCE Programmed By: Steve Ettinger Dave Warhol Graphics By: Joe Ferreira Sounds By: Dave Warhol Designed By: Steve Ettinger Joe Ferreira Dave Warhol Technical Support: Scott Robitille Produced By: Dave Warhol for INTV Corp. HOVER FORCE Copyright © 1986 INTV Corp.
Hold down 2 and 6 on the left controller and 2 and 3 on the right controller at the same time. Then, press Reset on the console to display these two messages from Steve Ettinger.