That sounds like a terrible B movie but right now I am preparing to spend a lot of time on Nagademon, or more correctly NaGaDeMon, and having never heard the words Franken Game until recently I have found myself using it twice this week.
What is a Franken Game?
A Franken Game is a game put together our of parts of other games. Originally Character Law was a bolt on replacement for must of the Players Handbook, Arms Law was a replacement combat system and Spell Law a drop in magic system. If you decided to take HARPs scalar spells and dropped it into RMC then you are now playing a Franken Game.