Can I add my 2 cents into the mix? It's just not for everyone and I'll go as far as to say that if you're unsure, just wait for 50-60% off at least or better yet - game pass.
Like, I'm looking at what I have experienced at the beginning of the game and I just CAN'T see myself going through it all over again and start a second playthrough, it's just not gonna happen cuz of how slow and frankly boring it all is at the start of the game in Vatican for no good reason tbh.
In games like Thief, Prey (Arkane one), Dishonored or Deus Ex the overall slow and methodical nature actually works really well, adds a lot to the atmosphere and mood, but Indiana Jones is not about all this particular combination of things tied together and especially from the core design perspective just like Tomb Raider and Uncharted isn't. Indiana Jones is about set pieces and great adventure and some occasional character moments, dialogue exchanges and all that in between mixed with puzzles, discoveries etc. Now, maybe later and after Vatican the game is a lot better, sure, I haven't seen any of it yet, but my god the Vatican part almost kills the desire to play more and see what's next. Good lord MG, Indiana Jones shouldn't be an immersive sim type of game.
Stangely enough, RoboCop was also more like immersive sim type of game, but during my 35 hr playthrough never was I at a point to start asking why the fuck is it more like a immersive sim, cuz I think pacing in this game is far superior to the one in Indiana Jones, stuff in the main hub unlocks gradually and overtime as you progress through the story and gameplay is way more exiting, much better and way more fun. So do I think The Great Circle is a bad game? No, but it leaves a bad first impression as soon as you get to the Vatican and spend a lot of time there doing essentially nothing particularly interesting and quite boring stuff Indiana never did in the movies.
Uh, but that's enough of me talking about the game. Steam numbers are not suprising to me at all even if we'll throw game pass out the window as if it's not a thing and never happened and I'm sure that physical sales are even worse.