Robot Jox ( http://www.imdb.com/title/tt0102800/) is definetely one of my favorite movies ever! I mean, to have two men piloting giant robots that follows their moves, done by stop motion effects (which I loved)? Brilliant.
Te movie is set in the future, when the wars are outlawed, the two superpowers handle territorial disputes in a different way. Each fields a giant robot to fight one-on-one battles in official matches, each piloted by a man inside, known as robot jockeys or jox. The contest for possession of Alaska will be fought by two of the best. The conscientious Achilles fights for the Americans. Opposing him is a Russian, Alexander, a ruthless and bloodthirsty adversary who has killed his previous nine American opponents. With a traitor feeding the Russians secret weapons information and new, genetically-engineered jox looking to take his place, Achilles faces obstacles at every turn in the hardest battle of his life. The movie is considered a cheezy flick of the eraly 90's, but I don;t see it as such. The acting is good, sure the story seems a bit flat in some places, but other than that I think its the biggest idea for a movie ever, attempted in pre-CGI era.

The reason I'm writing this article is to straight one thing up - the true sequel to Robot Jox. I've done quite a research , believe me, and this is what I found:
Many people think that 1993's Robot Wars (http://www.imdb.com/title/tt0107979/) is an unofficial sequel to Robot Jox, but that is completely not true for the following reasons
1) the movie has nothing to do with Robot jox except for two giant robots which were everywhere at the time
2) movie stars Danny Kamekona, who played Matsumoto in Robot Jox, who died in the movie
3) the trailer and the vhs covers say "From the creators of Robot Jox" and "First there was Robot Jox" which clearly says that this movie is not the follow up, but a completely different movie instead.
the information on IMDB is not accurate - in the Alternative Titles section it lists Robot Wars as RJ's unofficial sequel and instead of amovie poster they had the poster from UK's reality show called Robot Wars also
Robot Wars

Robot Wars is set in the year 2041, the rebel Centros are a plague to the survivors of the great toxic gas scare of 1993. A renegade Megarobot pilot (Paul) and an archeologist (Crampton) must team up (despite personal differences, a reluctant romance, and official pressure to cease and desist) to thwart the Centro's attempts to resurrect a hidden Megarobot, with which they can challenge the prevailing order


Most importantly, there is actually an OFFICIAL sequel to Robot Jox called Robot Jox 2: Crash And Burn (http://www.imdb.com/title/tt0099313/)

About the sequel
.

It has different titles in different countries, but in some European ones (like Poland) it does have the title Robot Jox 2: Crash And Burn (as you can see on the picture). Many countries (including US) only left Crash And Burn as the title, and thats why many people argue that this is not Robot Jox' sequel. Even if we take out the title, the movie is still clearly a sequel to RJ for few reasons
1) even the shortened title, Crash And Burn, is the main motto and line in the Robot Jox movie
2) The theme playing during the opening credits is Robot Jox theme!!
3)The movie was directed by Charles Band, RJ's producer (that's maybe a weak argument, but still)

This is an OFFICIAL sequel , not Robot Wars
Robot Jox 2 is more of a thriller, or even close to a horror movie. Movie's plot: Unicom is a powerful organization overseeing most of the world after its economic collapse. They have banned computers and robots in an attempt to insure "life, liberty, and the pursuit of economic stability". When a Unicom Synth robot infiltrates a southwest TV station and kills the manager, a revolutionary against the gestapo-like corporation, a lowly Unicom delivery man must help the rest of the station survive through the incoming "thermal storm".
True, the plot doesn;t have anything to do with its prequel, and it has that "The Thing" feel to it when a group of epople is trapped inside the tv station, knowing that one of them is Unicom's cyborg, but not knowing who.

It is interesting how on it's way to DVD those two movies were completely separated for some reason.
Robot Jox US and International DVD cover

Crash and Burn UK DVD cover