How? Picked up randomly at the library.
What? A 1930s era pulp RPG focused on the Hollow Earth subgenre, sort of.
Yeah, so? I'm on the record as being somewhat bored by Pulp RPGs: pulp is sort of by its nature -- and by the nature of the audience of RPGs -- a known quantity. Sure, if you were really new to the nerd-space, the idea of intrepid adventurers going about doing daring acts with seaplanes might seem novel.
So I was about to critique this work as seeming mechanically older, like something out of the 2000s, when I checked the publishing date, which is 2006. OK then: this is not a throwback to an outdated mechanical system, it is very in line with that time period's more... opinionated systems.
So ultimately what you/I get is a system that feels overburdened with cases and options, for a setting that not only feels shopworn, but also treads on sensitive issues (like racism and colonialism) without exploring them.
All that said, I do have to point out that the pdfs for this game (including the supplements) are pretty good sellers online. Sigh....