The VOIDRUNNER'S CODEX is coming! Explore new worlds, fight oppressive empires, fend off fearsome aliens, and wield deadly psionics with this comprehensive boxed set expansion for 5E and A5E!
There is a d20 Pulp Hero game out called "Forbidden Kingdoms," but I don't know the publisher off the top of my head. Indiana Jones would fit right in there.
Actually MSPE was made by Blade/Flying Buffalo..the people who brought you Tunnels & Trolls. At the time, Espionage from HERO had just made it's way to the market and Blade and HERO produced a few cross-stat products.
I ran both games (and later HERO's Justice, Inc. Pulp game) so many years ago after I kind of gave up on AD&D in the early 80's.