What is that sci fi movie from the 80s or 90s where people are put into

[TheLuckyPunk]

a battle arena of sorts? What is that sci fi movie from the 80s or 90s where people are put into a battle arena of sorts?

I vaguely remember a vehicle they might have been launched into the area with that was shaped like a ball...

I might be confusing multiple movies, but help if you can!

 

[TheShadow™®]

sounds like the running man with arnold schwartenneger - he's launched in with a big ball and fights in a deadly gameshow hosted by richard dawson
another with people fighting inside a ball is mel gibson's movie mad max beyond thunderdome