Information is currently scarce on the upcoming Indiana Jones video game, but a rumored title could help provide a clue as to what the game is about. The project is in development at MachineGames, the studio behind the modern Wolfenstein games, so it's certainly in the hands of people who know how to handle the classic Indiana Jones prerogative of killing Nazis. A 1930s setting makes it seem likely that this element will be included, but most other aspects have been subject to only loose speculation.
https://screenrant.com/indiana-jones-game-leaks-great-circle-hollow-earth/