The exact 'Martian Campaign' I've been hoping to write and run for years. Someone else beat me to it!
Edgar Rice Burroughs' Mars is invaded by HG Wells' Martians!
Tripods vs Sky Galleons! Red Men vs Grey Men!
A great romp through several intrigues, battles, and dungeons
One of the best 'Adventure Paths' I've seen published for any system.
[5 of 5 Stars!]