Sounds like you will be making it quite a bit different from Flash Gordon. But there will always be someone who says it's just a re-themed FG. They won't be able to prove it though -- you can't dust for vomit!
Quoted from Devin:Spinal Tap will live in our arcade, which is open to the public. That includes exposure to 8 year olds. Because of that it will have two modes, a "family friendly" mode that will probably NOT include references to such things as "sex farm woman" and a "full" mode that will include David St. Hubbins' reply to the famous question "Are we going to be doing Stonehenge tomorrow?" The game will switch automatically at 9pm.
There is actually SO MUCH that I want to tell about our plans for this game but it would fill paragraphs and I don't want to spoil the fun.
You should have a third mode.....the "commentary" mode. Maybe add it as an easter egg.