Wow, someone's gone to a lot of trouble making those. As you say though, very over the top. Any suggestions for a game these might suit? Cause I can't think of any.

I would never do it, but the flames could work with the Let there be Rock LE AC/DC machine.
It might go with the flames plastic on the right middle side of the playfield, or match the lower HELL playfield flames etc ?
But, to me, way over the top for any pinball I would ever own. They just look very weird.